Update ci-internal.yml

Author: sierpinskid

.github/workflows/ci-internal.yml

@@ -95,9 +95,15 @@ jobs:
       - name: Install node package, `unity-verify-code`
         run: npm install --global https://github.com/sierpinskid/unity-verify-code
 
-      - name: Install unar (for extracting .pkg files on Linux)
+      - name: Install xar
         if: ${{ inputs.os }} == 'ubuntu-latest'
-        run: sudo apt-get install -y unar
+        run: |
+          git clone https://github.com/mackyle/xar.git
+          cd xar/xar
+          ./autogen.sh
+          ./configure
+          make
+          sudo make install
         continue-on-error: true
 
       - name: Download Unity & Modules
@@ -211,7 +217,7 @@ jobs:
             if [[ ${{ inputs.os }} == 'macos-latest' ]]; then
               sudo installer -package ~/UnityIosModule.pkg -target /
             elif [[ ${{ inputs.os }} == 'ubuntu-latest' ]]; then
-              unar -o /opt/Editor ~/UnityAndroidModule.pkg
+              xar -xf ~/UnityAndroidModule.pkg -C /opt/Editor/
             fi
 
       - name: Create Test Results dir