SWDEV-123456 - allow merge commits in the log (#605)

[ROCm/clr commit: 0f4ad06629]

projects/clr/.github/workflows/pr-title-validate.yml

@@ -35,8 +35,12 @@ jobs:
           echo "$COMMITS"
           echo "$COMMITS" | while read -r hash message; do
             echo -e "$hash $message\n "
-            if [[ ! "$message" =~ ^SWDEV-[0-9]+ ]]; then
-              echo "::error:: $hash commit should start with Jira ticket ID, SWDEV-<num>"
+            if [[ "$message" =~ ^SWDEV-[0-9]+ ]]; then
+              echo "Valid JIRA ticket format"
+            elif [[ "$message" =~ ^Merge\ branch ]]; then
+              echo "Merge commits are allowed"
+            else
+              echo "::error:: $hash commit should start with Jira ticket ID, SWDEV-<num> or be a merge commit"
               exit 1
             fi
           done