mod: bump github.com/prometheus/client_golang from 1.19.1 to 1.20.3

Bumps [github.com/prometheus/client_golang](https://github.com/prometheus/client_golang) from 1.19.1 to 1.20.3.
- [Release notes](https://github.com/prometheus/client_golang/releases)
- [Changelog](https://github.com/prometheus/client_golang/blob/v1.20.3/CHANGELOG.md)
- [Commits](https://github.com/prometheus/client_golang/compare/v1.19.1...v1.20.3)

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

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

1 files changed, 10 insertions, 3 deletions

diff --git a/vendor/github.com/prometheus/common/expfmt/encode.go b/vendor/github.com/prometheus/common/expfmt/encode.go
index 8fd806184..ff5ef7a9d 100644
--- a/vendor/github.com/prometheus/common/expfmt/encode.go
+++ b/vendor/github.com/prometheus/common/expfmt/encode.go
@@ -21,9 +21,10 @@ import (
 	"google.golang.org/protobuf/encoding/protodelim"
 	"google.golang.org/protobuf/encoding/prototext"
 
-	"github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg"
 	"github.com/prometheus/common/model"
 
+	"github.com/munnerz/goautoneg"
+
 	dto "github.com/prometheus/client_model/go"
 )
 
@@ -139,7 +140,13 @@ func NegotiateIncludingOpenMetrics(h http.Header) Format {
 // interface is kept for backwards compatibility.
 // In cases where the Format does not allow for UTF-8 names, the global
 // NameEscapingScheme will be applied.
-func NewEncoder(w io.Writer, format Format) Encoder {
+//
+// NewEncoder can be called with additional options to customize the OpenMetrics text output.
+// For example:
+// NewEncoder(w, FmtOpenMetrics_1_0_0, WithCreatedLines())
+//
+// Extra options are ignored for all other formats.
+func NewEncoder(w io.Writer, format Format, options ...EncoderOption) Encoder {
 	escapingScheme := format.ToEscapingScheme()
 
 	switch format.FormatType() {
@@ -178,7 +185,7 @@ func NewEncoder(w io.Writer, format Format) Encoder {
 	case TypeOpenMetrics:
 		return encoderCloser{
 			encode: func(v *dto.MetricFamily) error {
-				_, err := MetricFamilyToOpenMetrics(w, model.EscapeMetricFamily(v, escapingScheme))
+				_, err := MetricFamilyToOpenMetrics(w, model.EscapeMetricFamily(v, escapingScheme), options...)
 				return err
 			},
 			close: func() error {