Bump the gomod-minor-patch group across 1 directory with 2 updates

Bumps the gomod-minor-patch group with 2 updates in the / directory: [cloud.google.com/go/datastore](https://github.com/googleapis/google-cloud-go) and [github.com/prometheus/client_golang](https://github.com/prometheus/client_golang).


Updates `cloud.google.com/go/datastore` from 1.21.0 to 1.22.0
- [Release notes](https://github.com/googleapis/google-cloud-go/releases)
- [Changelog](https://github.com/googleapis/google-cloud-go/blob/main/documentai/CHANGES.md)
- [Commits](googleapis/google-cloud-go@kms/v1.21.0...kms/v1.22.0)

Updates `github.com/prometheus/client_golang` from 1.7.1 to 1.23.2
- [Release notes](https://github.com/prometheus/client_golang/releases)
- [Changelog](https://github.com/prometheus/client_golang/blob/main/CHANGELOG.md)
- [Commits](prometheus/client_golang@v1.7.1...v1.23.2)

---
updated-dependencies:
- dependency-name: cloud.google.com/go/datastore
  dependency-version: 1.22.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gomod-minor-patch
- dependency-name: github.com/prometheus/client_golang
  dependency-version: 1.23.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gomod-minor-patch
...

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

Author: dependabot[bot]

go.mod

@@ -3,11 +3,11 @@ module github.com/m-lab/token-exchange
 go 1.24.0
 
 require (
-	cloud.google.com/go/datastore v1.21.0
+	cloud.google.com/go/datastore v1.22.0
 	github.com/go-jose/go-jose/v4 v4.1.3
 	github.com/google/uuid v1.6.0
 	github.com/m-lab/go v0.1.76
-	github.com/prometheus/client_golang v1.7.1
+	github.com/prometheus/client_golang v1.23.2
 	github.com/stretchr/testify v1.11.1
 )
 
@@ -23,21 +23,21 @@ require (
 	github.com/felixge/httpsnoop v1.0.4 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
-	github.com/golang/protobuf v1.5.4 // indirect
 	github.com/google/s2a-go v0.1.9 // indirect
 	github.com/googleapis/enterprise-certificate-proxy v0.3.11 // indirect
 	github.com/googleapis/gax-go/v2 v2.16.0 // indirect
-	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/prometheus/client_model v0.2.0 // indirect
-	github.com/prometheus/common v0.10.0 // indirect
-	github.com/prometheus/procfs v0.1.3 // indirect
+	github.com/prometheus/client_model v0.6.2 // indirect
+	github.com/prometheus/common v0.66.1 // indirect
+	github.com/prometheus/procfs v0.16.1 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
 	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.64.0 // indirect
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.64.0 // indirect
 	go.opentelemetry.io/otel v1.39.0 // indirect
 	go.opentelemetry.io/otel/metric v1.39.0 // indirect
 	go.opentelemetry.io/otel/trace v1.39.0 // indirect
+	go.yaml.in/yaml/v2 v2.4.2 // indirect
 	golang.org/x/crypto v0.47.0 // indirect
 	golang.org/x/net v0.49.0 // indirect
 	golang.org/x/oauth2 v0.34.0 // indirect