[chore]: Bump golang.org/x/oauth2 from 0.18.0 to 0.19.0 (#2816)

Bumps [golang.org/x/oauth2](https://github.com/golang/oauth2) from 0.18.0 to 0.19.0.
- [Commits](https://github.com/golang/oauth2/compare/v0.18.0...v0.19.0)

---
updated-dependencies:
- dependency-name: golang.org/x/oauth2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

1 files changed, 0 insertions, 12 deletions

diff --git a/vendor/google.golang.org/appengine/internal/identity_flex.go b/vendor/google.golang.org/appengine/internal/identity_flex.go
deleted file mode 100644
index 4201b6b58..000000000
--- a/vendor/google.golang.org/appengine/internal/identity_flex.go
+++ /dev/null
@@ -1,12 +0,0 @@
-// Copyright 2018 Google LLC. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-//go:build appenginevm
-// +build appenginevm
-
-package internal
-
-func init() {
-	appengineFlex = true
-}