Fix linux file names and AUR release

Author: pol-rivero

.github/workflows/ci.yml

@@ -194,7 +194,7 @@ jobs:
         if: ${{ runner.os == 'Linux' }}
         run: |
           for file in $(find ./dist -type f -name "GitHubDesktop-linux-*"); do
-            new_name=$(echo "$file" | sed -E "s/GitHubDesktop-linux-(.*)-(?:[0-9]+\\.)+[0-9]+(-beta[0-9]+)?\\.(.*)/GitHubDesktopPlus-v${APP_VERSION}-linux-\\1.\\3/")
+            new_name=$(echo "$file" | sed -E "s/GitHubDesktop-linux-(.*)-([0-9]+\\.)+[0-9]+(-beta[0-9]+)?\\.(.*)/GitHubDesktopPlus-v${APP_VERSION}-linux-\\1.\\4/")
             new_name=$(echo $new_name | sed -E "s/linux-amd64/linux-x86_64/")
             new_name=$(echo $new_name | sed -E "s/linux-aarch64/linux-arm64/")
             mv --verbose "$file" "$new_name"