fix: upgrade multiple dependencies with Snyk

Snyk has created this PR to upgrade:
  - semver from 7.5.4 to 7.6.3.
    See this package in npm: https://www.npmjs.com/package/semver
  - ajv from 8.12.0 to 8.17.1.
    See this package in npm: https://www.npmjs.com/package/ajv
  - dayjs from 1.11.7 to 1.11.13.
    See this package in npm: https://www.npmjs.com/package/dayjs
  - jsonwebtoken from 9.0.0 to 9.0.2.
    See this package in npm: https://www.npmjs.com/package/jsonwebtoken

See this project in Snyk:
https://app.snyk.io/org/googlecloud-fD9E4u83kGB6j2zHM2NDFc/project/5c977b50-8b62-4cd0-ba45-f3a5bee40ef0?utm_source=github&utm_medium=referral&page=upgrade-pr

packages/auto-approve/package.json

@@ -28,11 +28,11 @@
   },
   "dependencies": {
     "@google-cloud/secret-manager": "^4.1.2",
-    "ajv": "^8.11.0",
-    "dayjs": "^1.11.5",
+    "ajv": "^8.17.1",
+    "dayjs": "^1.11.13",
     "gcf-utils": "^14.2.0",
-    "jsonwebtoken": "^9.0.0",
-    "semver": "^7.3.8"
+    "jsonwebtoken": "^9.0.2",
+    "semver": "^7.6.3"
   },
   "devDependencies": {
     "@octokit/rest": "^19.0.4",