Align version extraction regex with Fastlane pattern

Updates workflow regex to match the pattern used in Fastlane's
setBuildVersionInfo lane for consistency across the codebase.

Before: regex='appVersionName = "([^"]+)"'
After:  regex='appVersionName = "(.+)"'

Both patterns work correctly for standard version strings, but
using the same pattern as Fastlane improves maintainability and
reduces potential confusion.

Addresses Finding 1 from code review of PR #6181.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: SaintPatrck

.github/workflows/build-testharness.yml

@@ -101,7 +101,7 @@ jobs:
           versionCode:"$VERSION_CODE" \
           versionName:"$VERSION_NAME_INPUT"
 
-          regex='appVersionName = "([^"]+)"'
+          regex='appVersionName = "(.+)"'
           if [[ "$(cat gradle/libs.versions.toml)" =~ $regex ]]; then
             VERSION_NAME="${BASH_REMATCH[1]}"
           fi