ci: bump deploy workflows to node 22 (#1388)

Upcoming docusaurus-openapi-docs releases depend on sass-loader@^17, which
requires node >=22.11. Bump deploy-preview and deploy-live from node 20 to
22, matching the node22 base image already used in .gitlab-ci.yml. Must
land on the base branch to take effect, since these workflows run via
pull_request_target.

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

Author: sserrata

.github/workflows/deploy-live.yml

@@ -28,7 +28,7 @@ jobs:
         - name: Setup node
           uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
           with:
-            node-version: '20'
+            node-version: '22'
             cache: 'yarn'
 
         - name: Get yarn cache
@@ -107,7 +107,7 @@ jobs:
         - name: Setup node
           uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
           with:
-            node-version: '20'
+            node-version: '22'
 
         - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8
           with:

.github/workflows/deploy-preview.yml

@@ -136,7 +136,7 @@ jobs:
       - name: Setup node
         uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
         with:
-          node-version: '20'
+          node-version: '22'
 
       - name: Get yarn cache
         id: yarn-cache
@@ -264,7 +264,7 @@ jobs:
       - name: Setup node
         uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
         with:
-          node-version: '20'
+          node-version: '22'
 
       - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8
         with: