chore(dependabot): bump golang.org/x/oauth2 from 0.26.0 to 0.28.0

Bumps [golang.org/x/oauth2](https://github.com/golang/oauth2) from 0.26.0 to 0.28.0.
- [Commits](golang/oauth2@v0.26.0...v0.28.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

go.mod

@@ -1,6 +1,7 @@
 module github.com/opentdf/otdfctl
 
 go 1.22.7
+toolchain go1.23.7
 
 require (
 	github.com/adrg/frontmatter v0.2.0
@@ -24,7 +25,7 @@ require (
 	github.com/stretchr/testify v1.10.0
 	github.com/zalando/go-keyring v0.2.6
 	github.com/zitadel/oidc/v3 v3.35.0
-	golang.org/x/oauth2 v0.26.0
+	golang.org/x/oauth2 v0.28.0
 	golang.org/x/term v0.28.0
 	google.golang.org/grpc v1.69.4
 	google.golang.org/protobuf v1.36.2

go.sum

@@ -355,8 +355,8 @@ golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
 golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
 golang.org/x/net v0.33.0 h1:74SYHlV8BIgHIFC/LrYkOGIwL19eTYXQ5wc6TBuO36I=
 golang.org/x/net v0.33.0/go.mod h1:HXLR5J+9DxmrqMwG9qjGCxZ+zKXxBru04zlTvWlWuN4=
-golang.org/x/oauth2 v0.26.0 h1:afQXWNNaeC4nvZ0Ed9XvCCzXM6UHJG7iCg0W4fPqSBE=
-golang.org/x/oauth2 v0.26.0/go.mod h1:XYTD2NtWslqkgxebSiOHnXEap4TF09sJSc7H1sXbhtI=
+golang.org/x/oauth2 v0.28.0 h1:CrgCKl8PPAVtLnU3c+EDw6x11699EWlsDeWNWKdIOkc=
+golang.org/x/oauth2 v0.28.0/go.mod h1:onh5ek6nERTohokkhCD/y2cV4Do3fxFHFuAejCkRWT8=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=