chore: release 1.2.0 (#38)

* updated CHANGELOG.md [ci skip]

* updated package.json [ci skip]

* updated samples/package.json [ci skip]

Author: release-please[bot]

secret-manager/package.json

@@ -14,7 +14,7 @@
     "test": "c8 mocha --recursive test/ --timeout=800000"
   },
   "dependencies": {
-    "@google-cloud/secret-manager": "^1.1.2"
+    "@google-cloud/secret-manager": "^1.2.0"
   },
   "devDependencies": {
     "c8": "^7.0.0",