chore(dev-deps): bump @salesforce/cli-plugins-testkit

Bumps [@salesforce/cli-plugins-testkit](https://github.com/salesforcecli/cli-plugins-testkit) from 5.3.53 to 5.3.55.
- [Release notes](https://github.com/salesforcecli/cli-plugins-testkit/releases)
- [Changelog](https://github.com/salesforcecli/cli-plugins-testkit/blob/main/CHANGELOG.md)
- [Commits](salesforcecli/cli-plugins-testkit@5.3.53...5.3.55)

---
updated-dependencies:
- dependency-name: "@salesforce/cli-plugins-testkit"
  dependency-version: 5.3.55
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package.json

@@ -20,7 +20,7 @@
   },
   "devDependencies": {
     "@oclif/plugin-command-snapshot": "^5.3.17",
-    "@salesforce/cli-plugins-testkit": "^5.3.53",
+    "@salesforce/cli-plugins-testkit": "^5.3.55",
     "@salesforce/dev-scripts": "^11.0.4",
     "@salesforce/plugin-command-reference": "^3.1.92",
     "@salesforce/types": "^1.7.1",

yarn.lock

@@ -1486,12 +1486,12 @@
     "@pnpm/network.ca-file" "^1.0.1"
     config-chain "^1.1.11"
 
-"@salesforce/cli-plugins-testkit@^5.3.53":
-  version "5.3.53"
-  resolved "https://registry.yarnpkg.com/@salesforce/cli-plugins-testkit/-/cli-plugins-testkit-5.3.53.tgz#acb60f5f50cf7f3211eaf7c70c3dff726b5e1571"
-  integrity sha512-tOMbLXZLrHLvK/qtmTNaTsDW1RC6/vpvXCbodejtMdyiDUf0rY3oROeboFA6VCy5iu71aumetLm1EBlvcyh7hw==
+"@salesforce/cli-plugins-testkit@^5.3.55":
+  version "5.3.55"
+  resolved "https://registry.yarnpkg.com/@salesforce/cli-plugins-testkit/-/cli-plugins-testkit-5.3.55.tgz#9230cb131950c60334b250940826ad20fe029023"
+  integrity sha512-NzV5WWHJDoybEtHVeTOQt/P/VizWsYwhiyAMU98NG+xAdQVBYyTx/2NhRTgnatxqHyNkYKwPMIJJQ9FLvHpU1A==
   dependencies:
-    "@salesforce/core" "^8.28.3"
+    "@salesforce/core" "^8.29.0"
     "@salesforce/kit" "^3.2.6"
     "@salesforce/ts-types" "^2.0.11"
     "@types/shelljs" "^0.10.0"