chore(deps): bump golang.org/x/oauth2 in /src/checkoutservice (#3027)

Bumps [golang.org/x/oauth2](https://github.com/golang/oauth2) from 0.26.0 to 0.27.0.
- [Commits](golang/oauth2@v0.26.0...v0.27.0)

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

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

Author: dependabot[bot]

src/checkoutservice/go.mod

@@ -37,7 +37,7 @@ require (
 	go.opentelemetry.io/proto/otlp v1.5.0 // indirect
 	golang.org/x/crypto v0.36.0 // indirect
 	golang.org/x/net v0.38.0 // indirect
-	golang.org/x/oauth2 v0.26.0 // indirect
+	golang.org/x/oauth2 v0.27.0 // indirect
 	golang.org/x/sync v0.12.0 // indirect
 	golang.org/x/sys v0.31.0 // indirect
 	golang.org/x/text v0.23.0 // indirect

src/checkoutservice/go.sum

@@ -131,8 +131,8 @@ golang.org/x/net v0.0.0-20201110031124-69a78807bb2b/go.mod h1:sp8m0HH+o8qH0wwXwY
 golang.org/x/net v0.38.0 h1:vRMAPTMaeGqVhG5QyLJHqNDwecKTomGeqbnfZyKlBI8=
 golang.org/x/net v0.38.0/go.mod h1:ivrbrMbzFq5J41QOQh0siUuly180yBYtLp+CKbEaFx8=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
-golang.org/x/oauth2 v0.26.0 h1:afQXWNNaeC4nvZ0Ed9XvCCzXM6UHJG7iCg0W4fPqSBE=
-golang.org/x/oauth2 v0.26.0/go.mod h1:XYTD2NtWslqkgxebSiOHnXEap4TF09sJSc7H1sXbhtI=
+golang.org/x/oauth2 v0.27.0 h1:da9Vo7/tDv5RH/7nZDz1eMGS/q1Vv1N/7FCrBhI9I3M=
+golang.org/x/oauth2 v0.27.0/go.mod h1:onh5ek6nERTohokkhCD/y2cV4Do3fxFHFuAejCkRWT8=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=