docs: add contributors

Author: YOU54F

README.md

@@ -318,3 +318,6 @@ And will return a Slack IncomingWebhookResult.
 ## Contributors
 
 - With thanks to [mikepsinn](https://github.com/mikepsinn) for Jenkins support.
+- With thanks to [samswartz13](https://github.com/samswartz13) for bug fixes
+- With thanks to [ayushipatel126](https://github.com/ayushipatel126) for dotenv support.
+- With thanks to [saikatharryc](https://github.com/saikatharryc) for custom url support.

package.json

@@ -42,7 +42,7 @@
     "ci": "npm run test:ci && rimraf ./bin && npm run compile",
     "ship-it": "npm run pre-publish && npm publish",
     "deploy:prepare": "./scripts/create_npmrc_file.sh",
-    "release": "standard-version --release-as 1.2.0"
+    "release": "standard-version --release-as 1.2.1"
   },
   "dependencies": {
     "@slack/types": "^1.0.0",