test: increase Testcontainers fixture timeout to 5 minutes

Slow ARM64 runners need more time to start PostgreSQL containers and run
migrations before integration tests execute.

tests/GmRelay.Bot.Tests/Features/Sessions/CreateSession/CreateSessionHandlerIntegrationTests.cs

@@ -14,7 +14,7 @@ public sealed class CreateSessionHandlerPostgresCollection : ICollectionFixture<
 
 public sealed class CreateSessionHandlerPostgresFixture : IAsyncLifetime
 {
-    private static readonly TimeSpan ContainerTimeout = TimeSpan.FromMinutes(2);
+    private static readonly TimeSpan ContainerTimeout = TimeSpan.FromMinutes(5);
     private readonly PostgreSqlContainer container = new PostgreSqlBuilder("postgres:17-alpine").Build();
 
     public Task InitializeAsync()

tests/GmRelay.Bot.Tests/Features/Sessions/CreateSession/Wizard/WizardDraftRepositoryFixture.cs

@@ -11,7 +11,7 @@ public sealed class WizardDraftRepositoryCollection : ICollectionFixture<WizardD
 
 public sealed class WizardDraftRepositoryFixture : IAsyncLifetime
 {
-    private static readonly TimeSpan ContainerTimeout = TimeSpan.FromMinutes(2);
+    private static readonly TimeSpan ContainerTimeout = TimeSpan.FromMinutes(5);
     private readonly PostgreSqlContainer container = new PostgreSqlBuilder("postgres:17-alpine").Build();
 
     public Task InitializeAsync()

tests/GmRelay.Bot.Tests/Web/PortfolioMigrationPostgresFixture.cs

@@ -11,7 +11,7 @@ public sealed class PortfolioMigrationPostgresCollection : ICollectionFixture<Po
 
 public sealed class PortfolioMigrationPostgresFixture : IAsyncLifetime
 {
-    private static readonly TimeSpan ContainerTimeout = TimeSpan.FromMinutes(2);
+    private static readonly TimeSpan ContainerTimeout = TimeSpan.FromMinutes(5);
     private readonly PostgreSqlContainer container = new PostgreSqlBuilder("postgres:17-alpine").Build();
 
     public Task InitializeAsync()