chore(dev-deps): bump @salesforce/cli-plugins-testkit (#1039)

Bumps [@salesforce/cli-plugins-testkit](https://github.com/salesforcecli/cli-plugins-testkit) from 5.1.1 to 5.1.2.
- [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@5.1.1...5.1.2)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -19,7 +19,7 @@
   "devDependencies": {
     "@oclif/plugin-command-snapshot": "^5.0.5",
     "@oclif/plugin-help": "^6.0.7",
-    "@salesforce/cli-plugins-testkit": "^5.0.2",
+    "@salesforce/cli-plugins-testkit": "^5.1.2",
     "@salesforce/dev-scripts": "^8.1.2",
     "@salesforce/plugin-command-reference": "^3.0.56",
     "@salesforce/plugin-info": "^2.6.50",

yarn.lock

@@ -976,12 +976,12 @@
     istanbul-reports "^3.1.6"
     jsforce "^2.0.0-beta.29"
 
-"@salesforce/cli-plugins-testkit@^5.0.2", "@salesforce/cli-plugins-testkit@^5.1.1":
-  version "5.1.1"
-  resolved "https://registry.yarnpkg.com/@salesforce/cli-plugins-testkit/-/cli-plugins-testkit-5.1.1.tgz#73baef2d27abc6cbb11c82e2869a3b4b57ff342d"
-  integrity sha512-qllBs+dGYIMS7GrJfJaalJSNsNohDAiLLHOZXk8WL+aZ1dRGDaWTiS4gyZKPKgeahXuNPTBxDqNg7WajvfNcxg==
+"@salesforce/cli-plugins-testkit@^5.1.1", "@salesforce/cli-plugins-testkit@^5.1.2":
+  version "5.1.2"
+  resolved "https://registry.yarnpkg.com/@salesforce/cli-plugins-testkit/-/cli-plugins-testkit-5.1.2.tgz#a8d0c988d26d22cbaa4f19e6be9f0d1a28238ef2"
+  integrity sha512-3tF1invyikFvkDfnRdFJBrhDV4gcO0cf7gKRT/9GmIHOF88qjiPiKy4VYx7q1fZI8xn6ZEov0LmMziLUVYjdtg==
   dependencies:
-    "@salesforce/core" "^6.4.0"
+    "@salesforce/core" "^6.4.1"
     "@salesforce/kit" "^3.0.15"
     "@salesforce/ts-types" "^2.0.9"
     "@types/shelljs" "^0.8.15"