Bump golang.org/x/oauth2 in /test/integration/test_app/sidecar-frontend (#797)

Bumps [golang.org/x/oauth2](https://github.com/golang/oauth2) from 0.0.0-20211104180415-d3ed0bb246c8 to 0.27.0.
- [Commits](https://github.com/golang/oauth2/commits/v0.27.0)

---
updated-dependencies:
- dependency-name: golang.org/x/oauth2
  dependency-version: 0.27.0
  dependency-type: indirect
...

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

Author: dependabot[bot]

test/integration/test_app/sidecar-frontend/go.mod

@@ -1,6 +1,6 @@
 module feapp
 
-go 1.20
+go 1.23.0
 
 require (
 	k8s.io/apimachinery v0.25.2
@@ -27,12 +27,11 @@ require (
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	golang.org/x/net v0.17.0 // indirect
-	golang.org/x/oauth2 v0.0.0-20211104180415-d3ed0bb246c8 // indirect
+	golang.org/x/oauth2 v0.27.0 // indirect
 	golang.org/x/sys v0.13.0 // indirect
 	golang.org/x/term v0.13.0 // indirect
 	golang.org/x/text v0.13.0 // indirect
 	golang.org/x/time v0.0.0-20220210224613-90d013bbcef8 // indirect
-	google.golang.org/appengine v1.6.7 // indirect
 	google.golang.org/protobuf v1.33.0 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect