chore(deps): bump drivers-evergreen-tools from ea6e66a to 18aed4f

.evergreen/config.in.yml

@@ -996,8 +996,6 @@ tasks:
           updates:
             - { key: NODE_LTS_VERSION, value: "20.19.0" }
       - func: install dependencies
-        vars:
-          NPM_VERSION: "11.11.1"
       - func: switch source
         vars:
           SOURCE_REV: refs/tags/v7.0.0
@@ -1020,8 +1018,6 @@ tasks:
             - { key: CLIENT_ENCRYPTION, value: "false" }
             - { key: NODE_LTS_VERSION, value: "20.19.0" }
       - func: install dependencies
-        vars:
-          NPM_VERSION: "11.11.1"
       - func: bootstrap mongo-orchestration
       - func: switch source
         vars:
@@ -1045,8 +1041,6 @@ tasks:
             - { key: CLIENT_ENCRYPTION, value: "false" }
             - { key: NODE_LTS_VERSION, value: "20.19.0" }
       - func: install dependencies
-        vars:
-          NPM_VERSION: "11.11.1"
       - func: bootstrap mongo-orchestration
       - func: switch source
         vars:
@@ -1070,8 +1064,6 @@ tasks:
             - { key: CLIENT_ENCRYPTION, value: "false" }
             - { key: NODE_LTS_VERSION, value: "20.19.0" }
       - func: install dependencies
-        vars:
-          NPM_VERSION: "11.11.1"
       - func: bootstrap mongo-orchestration
       - func: switch source
         vars:

.evergreen/config.yml

@@ -920,8 +920,6 @@ tasks:
           updates:
             - {key: NODE_LTS_VERSION, value: 20.19.0}
       - func: install dependencies
-        vars:
-          NPM_VERSION: 11.11.1
       - func: switch source
         vars:
           SOURCE_REV: refs/tags/v7.0.0
@@ -943,8 +941,6 @@ tasks:
             - {key: CLIENT_ENCRYPTION, value: 'false'}
             - {key: NODE_LTS_VERSION, value: 20.19.0}
       - func: install dependencies
-        vars:
-          NPM_VERSION: 11.11.1
       - func: bootstrap mongo-orchestration
       - func: switch source
         vars:
@@ -967,8 +963,6 @@ tasks:
             - {key: CLIENT_ENCRYPTION, value: 'false'}
             - {key: NODE_LTS_VERSION, value: 20.19.0}
       - func: install dependencies
-        vars:
-          NPM_VERSION: 11.11.1
       - func: bootstrap mongo-orchestration
       - func: switch source
         vars:
@@ -991,8 +985,6 @@ tasks:
             - {key: CLIENT_ENCRYPTION, value: 'false'}
             - {key: NODE_LTS_VERSION, value: 20.19.0}
       - func: install dependencies
-        vars:
-          NPM_VERSION: 11.11.1
       - func: bootstrap mongo-orchestration
       - func: switch source
         vars:
@@ -1993,8 +1985,6 @@ tasks:
           updates:
             - {key: NODE_LTS_VERSION, value: '22'}
       - func: install dependencies
-        vars:
-          NPM_VERSION: 11.11.1
       - func: run unit tests
   - name: run-unit-tests-node-24
     tags:
@@ -3578,7 +3568,6 @@ buildvariants:
     run_on: rhel80-large
     expansions:
       NODE_LTS_VERSION: 22
-      NPM_VERSION: 11.11.1
       CLIENT_ENCRYPTION: 'true'
       TEST_CSFLE: 'true'
     tasks:
@@ -3787,7 +3776,6 @@ buildvariants:
     run_on: windows-2022-latest-large
     expansions:
       NODE_LTS_VERSION: 22
-      NPM_VERSION: 11.11.1
       CLIENT_ENCRYPTION: 'false'
       TEST_CSFLE: 'false'
     tasks:

.evergreen/generate_evergreen_tasks.js

@@ -21,14 +21,6 @@ const {
   GRAVITON_OS
 } = require('./ci_matrix_constants');
 
-// TODO(NODE-7499): unpin npm version once Node 22 ships a bundled npm that can upgrade itself
-const NODE22_NPM_VERSION = '11.11.1';
-
-/** Returns the major version number from a Node.js version string (e.g. 'v22.11.0', '20.19.0', 22). */
-function nodeMajorVersion(version) {
-  return semver.coerce(String(version))?.major;
-}
-
 const OPERATING_SYSTEMS = [
   {
     name: DEFAULT_OS,
@@ -406,12 +398,6 @@ for (const {
     const expansions = { NODE_LTS_VERSION };
     const taskNames = tasks.map(({ name }) => name);
 
-    // bundled npm version in node v22.22.2 (v10.9.7) can't upgrade itself to @latest,
-    // so we need to pin npm version for these variants to latest "upgradable" version
-    if (nodeMajorVersion(NODE_LTS_VERSION) === 22) {
-      expansions.NPM_VERSION = NODE22_NPM_VERSION;
-    }
-
     expansions.CLIENT_ENCRYPTION = String(!!clientEncryption);
     expansions.TEST_CSFLE = expansions.CLIENT_ENCRYPTION;
 
@@ -494,9 +480,7 @@ const unitTestTasks = Array.from(
           updateExpansions({
             NODE_LTS_VERSION
           }),
-          nodeMajorVersion(NODE_LTS_VERSION) === 22
-            ? { func: 'install dependencies', vars: { NPM_VERSION: NODE22_NPM_VERSION } }
-            : { func: 'install dependencies' },
+          { func: 'install dependencies' },
           { func: 'run unit tests' }
         ]
       };

.evergreen/install-dependencies.sh

@@ -7,9 +7,10 @@ set -o errexit  # Exit the script with error if any of the commands fail
 ## a full nodejs version, in the format v<major>.<minor>.patch
 if [ -z ${NODE_LTS_VERSION+omitted} ]; then echo "NODE_LTS_VERSION is unset" && exit 1; fi
 
-# npm version can be defined in the environment for cases where we need to install
-# a version lower than latest to support EOL Node versions. When not provided will
-# be handled by this script in drivers tools.
+# Use the npm bundled with the installed Node.js release instead of upgrading to
+# npm@latest. The bundled npm is version-matched to the Node release and avoids
+# pulling an npm@latest that no longer supports our (often pinned) Node version.
+export SKIP_NPM_UPGRADE=true
 source $DRIVERS_TOOLS/.evergreen/install-node.sh
 
 # On Windows, install-node.sh resolves SCRIPT_DIR via realpath which may follow an NTFS