Bump the major group across 1 directory with 3 updates

Bumps the major group with 3 updates in the / directory: [payload](https://github.com/payloadcms/payload/tree/HEAD/packages/payload), [@payloadcms/db-mongodb](https://github.com/payloadcms/payload/tree/HEAD/packages/db-mongodb) and [@payloadcms/richtext-slate](https://github.com/payloadcms/payload/tree/HEAD/packages/richtext-slate).


Updates `payload` from 2.30.2 to 3.16.0
- [Release notes](https://github.com/payloadcms/payload/releases)
- [Commits](https://github.com/payloadcms/payload/commits/v3.16.0/packages/payload)

Updates `@payloadcms/db-mongodb` from 1.7.3 to 3.16.0
- [Release notes](https://github.com/payloadcms/payload/releases)
- [Commits](https://github.com/payloadcms/payload/commits/v3.16.0/packages/db-mongodb)

Updates `@payloadcms/richtext-slate` from 1.5.2 to 3.16.0
- [Release notes](https://github.com/payloadcms/payload/releases)
- [Commits](https://github.com/payloadcms/payload/commits/v3.16.0/packages/richtext-slate)

---
updated-dependencies:
- dependency-name: payload
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: major
- dependency-name: "@payloadcms/db-mongodb"
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: major
- dependency-name: "@payloadcms/richtext-slate"
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: major
...

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

package.json

@@ -25,12 +25,12 @@
   "dependencies": {
     "cloudinary": "^2.5.1",
     "dotenv": "^16.4.7",
-    "payload": "^2.30.2"
+    "payload": "^3.16.0"
   },
   "devDependencies": {
     "@types/node": "^22.10.2",
-    "@payloadcms/db-mongodb": "^1.7.3",
-    "@payloadcms/richtext-slate": "^1.0.7",
+    "@payloadcms/db-mongodb": "^3.16.0",
+    "@payloadcms/richtext-slate": "^3.16.0",
     "@types/jest": "29.5.14",
     "@typescript-eslint/eslint-plugin": "^8.18.2",
     "@typescript-eslint/parser": "^8.18.2",