ci(rat): fetch apache-rat from archive.apache.org (0.17 aged off downloads mirror)

Generated-by: Claude Code

Author: potiuk

.github/workflows/rat.yaml

@@ -25,7 +25,7 @@ jobs:
 
       - name: Download Apache RAT
         run: |
-          curl -L -O https://downloads.apache.org/creadur/apache-rat-0.17/apache-rat-0.17-bin.tar.gz
+          curl -L -O https://archive.apache.org/dist/creadur/apache-rat-0.17/apache-rat-0.17-bin.tar.gz
           tar -xzf apache-rat-0.17-bin.tar.gz
 
       - name: Run RAT