Add additional source repositories to mirror workflow

Author: mohd-akram

.github/workflows/mirror.yml

@@ -17,6 +17,8 @@ jobs:
           - https://chromium.googlesource.com/chromium/src/build
           - https://chromium.googlesource.com/chromium/src/buildtools
           - https://chromium.googlesource.com/chromium/src/testing
+          - https://chromium.googlesource.com/chromium/src/third_party/jsoncpp
+          - https://chromium.googlesource.com/chromium/src/third_party/zlib
 
     steps:
       - uses: actions/checkout@v5