fix luarocks error

Author: chensunny

.github/workflows/test.yml

@@ -52,13 +52,17 @@ jobs:
     - name: Install Test::Nginx
       run: cpanm -q -n Test::Nginx
 
+    - uses: leafo/gh-actions-luarocks@v5
+      with:
+        luarocksVersion: "3.12.2"
+
     - name: Install Luacov
-      run: |
-        # Clear luarocks cache to avoid manifest corruption
-        rm -rf ~/.cache/luarocks || true
+      run:
         /usr/local/openresty/luajit/bin/luarocks install luacov
         /usr/local/openresty/luajit/bin/luarocks install lua-resty-openssl
 
+    - uses: actions/checkout@v4
+
     - name: Run tests
       run: make coverage