chore(main): release 3.1.0 (#567)

* chore(main): release 3.1.0

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: sofisl <[email protected]>

Author: 3 people

kms/package.json

@@ -14,7 +14,7 @@
     "test": "c8 mocha --recursive test/ --timeout=800000"
   },
   "dependencies": {
-    "@google-cloud/kms": "^3.0.1",
+    "@google-cloud/kms": "^3.1.0",
     "fast-crc32c": "^2.0.0",
     "jslint": "^0.12.1"
   },