fix(core, ios): ensure iOS SDK version can be found from Package.swift (#13804)

Author: russellwheatley

.github/workflows/all_plugins.yaml

@@ -124,7 +124,7 @@ jobs:
  "flutter build web"
  swift-integration:
  runs-on: macos-latest
- timeout-minutes: 10
+ timeout-minutes: 30
  steps:
  - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938
  - uses: subosito/flutter-action@2783a3f08e1baf891508463f8c6653c258246225
@@ -135,10 +135,10 @@ jobs:
  with:
  melos-version: '5.3.0'
  - name: 'Swift Integration Setup'
- run: flutter config --enable-swift-package-manager 
+ run: flutter config --enable-swift-package-manager
  - name: 'Build Apps with Swift Package Manager'
  run: ./.github/workflows/scripts/swift-integration.sh
- 
+
  test:
  runs-on: ubuntu-latest
  timeout-minutes: 30

packages/firebase_core/firebase_core/ios/firebase_core/Package.swift

@@ -14,11 +14,16 @@ enum ConfigurationError: Error {
  case invalidFormat(String)
 }
 
-let iosRootDirectory = String(URL(string: #file)!.deletingLastPathComponent().absoluteString
+let firebaseCoreDirectory = String(URL(string: #file)!.deletingLastPathComponent().absoluteString
  .dropLast())
 
 func loadPubspecVersion() throws -> String {
- let pubspecPath = NSString.path(withComponents: [iosRootDirectory, "..", "..", "pubspec.yaml"])
+ let pubspecPath = NSString.path(withComponents: [
+ firebaseCoreDirectory,
+ "..",
+ "..",
+ "pubspec.yaml",
+ ])
  do {
  let yamlString = try String(contentsOfFile: pubspecPath, encoding: .utf8)
  if let versionLine = yamlString.split(separator: "\n")
@@ -35,12 +40,8 @@ func loadPubspecVersion() throws -> String {
 
 func loadFirebaseSDKVersion() throws -> String {
  let firebaseCoreScriptPath = NSString.path(withComponents: [
- iosRootDirectory,
- "..",
- "..",
+ firebaseCoreDirectory,
  "..",
- "firebase_core",
- "ios",
  "firebase_sdk_version.rb",
  ])
  do {