docs: update latest version

Author: adrians5j

README.md

@@ -7,7 +7,7 @@ A simple GitHub action that makes sure all commit messages are following the [Co
 Note that, typically, you would make this check on a pre-commit hook (for example, using something like [Commitlint](https://commitlint.js.org/)), but those can easily be skipped, hence this GitHub action.
 
 ### Usage
-Latest version: `v1.3.1`
+Latest version: `v1.4.0`
 
 ```yml
 name: Conventional Commits
@@ -23,7 +23,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      - uses: webiny/action-conventional-commits@v1.3.1
+      - uses: webiny/action-conventional-commits@v1.4.0
         with:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # Optional, for private repositories.
           allowed-commit-types: "feat,fix" # Optional, set if you want a subset of commit types to be allowed.