try stripping newlines

Author: sam0x17

.github/workflows/check-labels.yml

@@ -14,9 +14,11 @@ jobs:
         run: |
           echo "A"
           REQUIRED_LABEL="devnet-pass"
+          echo "B"
+          PR_LABELS=$(echo '${{ toJSON(github.event.pull_request.labels) }}' | tr -d '\n')
           echo "C"
 
-          if echo '${{ toJSON(github.event.pull_request.labels) }}' | grep -q "\"name\":\"$REQUIRED_LABEL\""; then
+          if echo "$PR_LABELS" | grep -q "\"name\":\"$REQUIRED_LABEL\""; then
             echo "D1"
             echo "Required label '$REQUIRED_LABEL' is present."
           else: