Minor code enhancements to use GITHUB_OUTPUT and to exit the run if the commit-hash validation fails (#1)

* Minor changes to use GITHUB_OUTPUT instead of the deprecated set-output

Author: pavanrayadurg

action.yml

@@ -18,6 +18,7 @@ inputs:
 outputs:
   valid_commit:
     description: "Indicates if the commit hash is valid"
+    value: ${{ steps.verify-commit.outputs.valid_commit }}
 
 runs:
   using: "composite"
@@ -30,15 +31,15 @@ runs:
         commit_id="${{ inputs.commit-hash }}"
 
         if ! git rev-parse --quiet --verify "${commit_id}"; then
-          echo "::set-output name=valid_commit::false"
+          echo "valid_commit=false" >> $GITHUB_OUTPUT
           echo "Invalid commit hash: \`$commit_id\`"
         else
           # Verify if the commit is on the specified branch
           if ! git merge-base --is-ancestor "${commit_id}" "${branch_name}"; then
-            echo "::set-output name=valid_commit::false"
-            echo "Commit \`$commit_id\` not found from branch \`$branch_name\`"
+            echo "valid_commit=false" >> $GITHUB_OUTPUT
+            echo "Commit \`$commit_id\` not found on the branch \`$branch_name\`"
           else
-            echo "::set-output name=valid_commit::true"
-            echo "Commit \`$commit_id\` is valid from branch \`$branch_name\`"
+            echo "valid_commit=true" >> $GITHUB_OUTPUT
+            echo "Commit \`$commit_id\` is valid on the branch \`$branch_name\`"
           fi
         fi