Fix!

Author: yaito3014

.github/workflows/ci.yml

@@ -178,7 +178,7 @@ jobs:
           if [ -e build/.iris_catch2_build_stamp ]; then
             echo "catch2_timestamp=$(stat -c %Y build/.iris_catch2_build_stamp)" >> $GITHUB_OUTPUT
           else
-            echo "catch2_timestamp=0 >> $GITHUB_OUTPUT
+            echo "catch2_timestamp=0" >> $GITHUB_OUTPUT
           fi
 
       - name: Try building Catch2