fix: restore CredentialsService initialization in github.go

Author: cointem

github/github.go

@@ -440,13 +440,13 @@ func (c *Client) initialize() {
 	c.Apps = (*AppsService)(&c.common)
 	c.Authorizations = (*AuthorizationsService)(&c.common)
 	c.Billing = (*BillingService)(&c.common)
-	c.Credentials = (*CredentialsService)(&c.common)
 	c.Checks = (*ChecksService)(&c.common)
 	c.Classroom = (*ClassroomService)(&c.common)
 	c.CodeScanning = (*CodeScanningService)(&c.common)
 	c.Codespaces = (*CodespacesService)(&c.common)
 	c.CodesOfConduct = (*CodesOfConductService)(&c.common)
 	c.Copilot = (*CopilotService)(&c.common)
+	c.Credentials = (*CredentialsService)(&c.common)
 	c.Dependabot = (*DependabotService)(&c.common)
 	c.DependencyGraph = (*DependencyGraphService)(&c.common)
 	c.Emojis = (*EmojisService)(&c.common)