chore(deps): Bump golang.org/x/oauth2 in the go_modules group

Bumps the go_modules group with 1 update: [golang.org/x/oauth2](https://github.com/golang/oauth2).


Updates `golang.org/x/oauth2` from 0.21.0 to 0.27.0
- [Commits](golang/oauth2@v0.21.0...v0.27.0)

---
updated-dependencies:
- dependency-name: golang.org/x/oauth2
  dependency-version: 0.27.0
  dependency-type: direct:production
  dependency-group: go_modules
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

go.mod

@@ -1,5 +1,5 @@
 module github.com/beatlabs/github-auth
 
-go 1.21
+go 1.23.0
 
-require golang.org/x/oauth2 v0.21.0
+require golang.org/x/oauth2 v0.27.0

go.sum

@@ -1,4 +1,4 @@
 github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
 github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
-golang.org/x/oauth2 v0.21.0 h1:tsimM75w1tF/uws5rbeHzIWxEqElMehnc+iW793zsZs=
-golang.org/x/oauth2 v0.21.0/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=