fix(deps): bump probot from 12.2.3 to 12.2.4

Bumps [probot](https://github.com/probot/probot) from 12.2.3 to 12.2.4.
- [Release notes](https://github.com/probot/probot/releases)
- [Commits](probot/probot@v12.2.3...v12.2.4)

---
updated-dependencies:
- dependency-name: probot
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package-lock.json

@@ -11,7 +11,7 @@
   "license": "ISC",
   "repository": "github:probot/example-google-cloud-function",
   "dependencies": {
-    "probot": "^12.2.3"
+    "probot": "^12.2.4"
   },
   "devDependencies": {
     "nock": "^13.2.4",