action: update commitlint version

fix Check for signed-off-by doesn't ignore comments
wagoid/commitlint-github-action#187.

Signed-off-by: Nitin Goyal <[email protected]>

Author: iamniting

.github/workflows/commitlint.yaml

@@ -16,7 +16,7 @@ jobs:
         fetch-depth: 0
 
     - name: run commitlint
-      uses: wagoid/commitlint-github-action@v3
+      uses: wagoid/commitlint-github-action@v4
       with:
         configFile: './.github/workflows/conf/commitlintrc.json'
         helpURL: |

.github/workflows/conf/commitlintrc.json

@@ -58,6 +58,11 @@
             2,
             "never"
         ],
+        "trailer-exists": [
+             2,
+            "always",
+            "Signed-off-by:"
+        ],
         "type-case": [
             0,
             "always",