ci: support deprecated kernel versions (#648)

.github/workflows/gki-kernel.yml

@@ -90,6 +90,12 @@ jobs:
           git clone https://gerrit.googlesource.com/git-repo
           mkdir android-kernel && cd android-kernel
           ../git-repo/repo init --depth=1 --u https://android.googlesource.com/kernel/manifest -b common-${{ inputs.tag }}
+          REMOTE_BRANCH=$(git ls-remote https://android.googlesource.com/kernel/common ${{ inputs.tag }})
+          if grep -q deprecated <<< $REMOTE_BRANCH; then
+            echo "Found deprecated branch: ${{ inputs.tag }}"
+            sed -i 's/"${{ inputs.tag }}"/"deprecated\/${{ inputs.tag }}"/g' .repo/manifests/default.xml
+            cat .repo/manifests/default.xml
+          fi
           ../git-repo/repo sync -j$(nproc --all)
 
       - name: Setup KernelSU