gh/action: fix a test as we changed the permissions on the files

Author: sylvestre

.github/workflows/l10n.yml

@@ -502,7 +502,7 @@ jobs:
 
         # Find where coreutils was actually installed
         echo "Searching for coreutils binary in installation directory..."
-        COREUTILS_BIN=$(find "$INSTALL_DIR" -name "coreutils" -type f 2>/dev/null | head -1)
+        COREUTILS_BIN=$(find "$INSTALL_DIR" -name "coreutils" -type f -executable 2>/dev/null | head -1)
         if [ -n "$COREUTILS_BIN" ]; then
           echo "Found coreutils at: $COREUTILS_BIN"
           export COREUTILS_BIN