Fix concurrency issue

Tests/TMDbIntegrationTests/Utility/CredentialHelper.swift

@@ -20,36 +20,27 @@
 import Foundation
 import TMDb
 
-final class CredentialHelper {
+final class CredentialHelper: Sendable {
 
     static let shared = CredentialHelper()
 
-    private let processInfo: ProcessInfo
-
-    private init(processInto: ProcessInfo = ProcessInfo.processInfo) {
-        self.processInfo = processInto
-    }
+    let tmdbCredential: Credential
+    let tmdbAPIKey: String
 
     var hasCredential: Bool {
-        let credential = self.tmdbCredential
+        !tmdbCredential.username.isEmpty && !tmdbCredential.password.isEmpty
+    }
 
-        return !credential.username.isEmpty && !credential.password.isEmpty
+    var hasAPIKey: Bool {
+        !tmdbAPIKey.isEmpty
     }
 
-    lazy var tmdbCredential: Credential = {
+    private init(processInfo: ProcessInfo = ProcessInfo.processInfo) {
         let username = processInfo.environment["TMDB_USERNAME"] ?? ""
         let password = processInfo.environment["TMDB_PASSWORD"] ?? ""
-        let credential = Credential(username: username, password: password)
+        self.tmdbCredential = Credential(username: username, password: password)
 
-        return credential
-    }()
-
-    var hasAPIKey: Bool {
-        !self.tmdbAPIKey.isEmpty
+        self.tmdbAPIKey = processInfo.environment["TMDB_API_KEY"] ?? ""
     }
 
-    lazy var tmdbAPIKey: String = {
-        processInfo.environment["TMDB_API_KEY"] ?? ""
-    }()
-
 }