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

Bumps [@salesforce/cli-plugins-testkit](https://github.com/salesforcecli/cli-plugins-testkit) from 5.1.7 to 5.3.33.
- [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@5.1.7...5.3.33)

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

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

package.json

@@ -13,7 +13,7 @@
     "@commitlint/cli": "^18.6.1",
     "@commitlint/config-conventional": "^18.6.0",
     "@oclif/plugin-command-snapshot": "^5.0.2",
-    "@salesforce/cli-plugins-testkit": "^5.1.7",
+    "@salesforce/cli-plugins-testkit": "^5.3.33",
     "@salesforce/dev-scripts": "^8.3.0",
     "eslint-plugin-sf-plugin": "^1.17.2",
     "husky": "^9.1.4",