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

Bumps [@salesforce/cli-plugins-testkit](https://github.com/salesforcecli/cli-plugins-testkit) from 4.4.7 to 4.4.8.
- [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@4.4.7...4.4.8)

---
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]>

package.json

@@ -18,7 +18,7 @@
   },
   "devDependencies": {
     "@oclif/plugin-command-snapshot": "^4.0.14",
-    "@salesforce/cli-plugins-testkit": "^4.4.7",
+    "@salesforce/cli-plugins-testkit": "^4.4.8",
     "@salesforce/dev-config": "^4.0.1",
     "@salesforce/dev-scripts": "^5.11.0",
     "@salesforce/plugin-command-reference": "^3.0.42",

yarn.lock

@@ -940,10 +940,10 @@
   dependencies:
     "@octokit/openapi-types" "^12.11.0"
 
-"@salesforce/cli-plugins-testkit@^4.4.7":
-  version "4.4.7"
-  resolved "https://registry.yarnpkg.com/@salesforce/cli-plugins-testkit/-/cli-plugins-testkit-4.4.7.tgz#dced302efd8415b9f96df639755e279f13d6d220"
-  integrity sha512-QKxQEdYvV8hcqGfpxmYFtPBRwejLA7bhnbNNWYugEAKdsxXS12Zi1TyiUetzifQngVgvoxEDjcU+v8SRKCb96Q==
+"@salesforce/cli-plugins-testkit@^4.4.8":
+  version "4.4.8"
+  resolved "https://registry.yarnpkg.com/@salesforce/cli-plugins-testkit/-/cli-plugins-testkit-4.4.8.tgz#0c4a7e371f319f63c27b23ba6b89e3341655ff87"
+  integrity sha512-8IuVupRX8APj9FEx8HjfRxYXeTrq78/Nstch2S6FhZXbDShzqBbVfQ3DVf2uDejxgU7rehah0mwcVyWYjTcBGA==
   dependencies:
     "@salesforce/core" "^5.3.5"
     "@salesforce/kit" "^3.0.13"