fix(ci): pin commitlint version (#466)

Author: stevennevins

.github/workflows/commitlint.yml

@@ -12,7 +12,7 @@ jobs:
       - name: Install node dependencies
         run: |
           npm install conventional-changelog-conventionalcommits
-          npm install commitlint@latest 
+          npm install commitlint@18.2.0
 
       - name: Validate current commit (last commit) with commitlint
         if: github.event_name == 'push'