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

Bumps [@salesforce/cli-plugins-testkit](https://github.com/salesforcecli/cli-plugins-testkit) from 5.0.6 to 5.1.0.
- [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@5.0.6...5.1.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -13,7 +13,7 @@
   "devDependencies": {
     "@oclif/plugin-command-snapshot": "^5.0.3",
     "@oclif/test": "^3.1.3",
-    "@salesforce/cli-plugins-testkit": "^5.0.6",
+    "@salesforce/cli-plugins-testkit": "^5.1.0",
     "@salesforce/dev-scripts": "^8.1.0",
     "@salesforce/kit": "^3.0.15",
     "@salesforce/plugin-command-reference": "^3.0.47",

yarn.lock

@@ -971,10 +971,10 @@
     istanbul-lib-report "^3.0.1"
     istanbul-reports "^3.1.6"
 
-"@salesforce/cli-plugins-testkit@^5.0.6":
-  version "5.0.6"
-  resolved "https://registry.yarnpkg.com/@salesforce/cli-plugins-testkit/-/cli-plugins-testkit-5.0.6.tgz#16fb3378406b19ba7b70ebec58c27d683141c571"
-  integrity sha512-1zbyVpATCSgcL8X6svic2MNqIGGJLUQAwkLmTiibwiudnKGZhkXj1kF+46c2mr5oi4hLKk7Bpzq2fO45MT14/A==
+"@salesforce/cli-plugins-testkit@^5.1.0":
+  version "5.1.0"
+  resolved "https://registry.yarnpkg.com/@salesforce/cli-plugins-testkit/-/cli-plugins-testkit-5.1.0.tgz#8d9caa22ea9e99879629206892afb26bcd540cef"
+  integrity sha512-P5tYlNqE87lX9Yp2aAsK75PICoAbmrSK3LEqiIVbtn75PN3OKiD1JEEX2ZDu+HWtO4/nxPtO4JFvX5j00EZGBA==
   dependencies:
     "@salesforce/core" "^6.2.2"
     "@salesforce/kit" "^3.0.15"