[chore]: Bump github.com/prometheus/client_golang from 1.20.3 to 1.20.4 (#3327)

Bumps [github.com/prometheus/client_golang](https://github.com/prometheus/client_golang) from 1.20.3 to 1.20.4.
- [Release notes](https://github.com/prometheus/client_golang/releases)
- [Changelog](https://github.com/prometheus/client_golang/blob/main/CHANGELOG.md)
- [Commits](https://github.com/prometheus/client_golang/compare/v1.20.3...v1.20.4)

---
updated-dependencies:
- dependency-name: github.com/prometheus/client_golang
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

go.mod

@@ -46,7 +46,7 @@ require (
 	github.com/mitchellh/mapstructure v1.5.0
 	github.com/ncruces/go-sqlite3 v0.18.3
 	github.com/oklog/ulid v1.3.1
-	github.com/prometheus/client_golang v1.20.3
+	github.com/prometheus/client_golang v1.20.4
 	github.com/spf13/cobra v1.8.1
 	github.com/spf13/viper v1.19.0
 	github.com/stretchr/testify v1.9.0

go.sum

@@ -468,8 +468,8 @@ github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 h1:Jamvg5psRI
 github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prashantv/gostub v1.1.0 h1:BTyx3RfQjRHnUWaGF9oQos79AlQ5k8WNktv7VGvVH4g=
 github.com/prashantv/gostub v1.1.0/go.mod h1:A5zLQHz7ieHGG7is6LLXLz7I8+3LZzsrV0P1IAHhP5U=
-github.com/prometheus/client_golang v1.20.3 h1:oPksm4K8B+Vt35tUhw6GbSNSgVlVSBH0qELP/7u83l4=
+github.com/prometheus/client_golang v1.20.4 h1:Tgh3Yr67PaOv/uTqloMsCEdeuFTatm5zIq5+qNN23vI=
-github.com/prometheus/client_golang v1.20.3/go.mod h1:PIEt8X02hGcP8JWbeHyeZ53Y/jReSnHgO035n//V5WE=
+github.com/prometheus/client_golang v1.20.4/go.mod h1:PIEt8X02hGcP8JWbeHyeZ53Y/jReSnHgO035n//V5WE=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/prometheus/client_model v0.6.1 h1:ZKSh/rekM+n3CeS952MLRAdFwIKqeY8b62p8ais2e9E=
 github.com/prometheus/client_model v0.6.1/go.mod h1:OrxVMOVHjw3lKMa8+x6HeMGkHMQyHDk9E3jmP2AmGiY=

vendor/github.com/prometheus/client_golang/prometheus/histogram.go

@@ -844,9 +844,7 @@ func (h *histogram) Write(out *dto.Metric) error {
 			}}
 		}
 
-		// If exemplars are not configured, the cap will be 0.
+		if h.nativeExemplars.isEnabled() {
-		// So append is not needed in this case.
-		if cap(h.nativeExemplars.exemplars) > 0 {
 			h.nativeExemplars.Lock()
 			his.Exemplars = append(his.Exemplars, h.nativeExemplars.exemplars...)
 			h.nativeExemplars.Unlock()
@@ -1665,6 +1663,10 @@ type nativeExemplars struct {
 	exemplars []*dto.Exemplar
 }
 
+func (n *nativeExemplars) isEnabled() bool {
+	return n.ttl != -1
+}
+
 func makeNativeExemplars(ttl time.Duration, maxCount int) nativeExemplars {
 	if ttl == 0 {
 		ttl = 5 * time.Minute
@@ -1686,7 +1688,7 @@ func makeNativeExemplars(ttl time.Duration, maxCount int) nativeExemplars {
 }
 
 func (n *nativeExemplars) addExemplar(e *dto.Exemplar) {
-	if n.ttl == -1 {
+	if !n.isEnabled() {
 		return
 	}
 

vendor/modules.txt

@@ -561,7 +561,7 @@ github.com/pkg/errors
 # github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2
 ## explicit
 github.com/pmezard/go-difflib/difflib
-# github.com/prometheus/client_golang v1.20.3
+# github.com/prometheus/client_golang v1.20.4
 ## explicit; go 1.20
 github.com/prometheus/client_golang/internal/github.com/golang/gddo/httputil
 github.com/prometheus/client_golang/internal/github.com/golang/gddo/httputil/header