build(deps): bump github.com/pires/go-proxyproto from 0.11.0 to 0.12.0 (#8059)

Bumps [github.com/pires/go-proxyproto](https://github.com/pires/go-proxyproto) from 0.11.0 to 0.12.0.
- [Release notes](https://github.com/pires/go-proxyproto/releases)
- [Commits](https://github.com/pires/go-proxyproto/compare/v0.11.0...v0.12.0)

---
updated-dependencies:
- dependency-name: github.com/pires/go-proxyproto
  dependency-version: 0.12.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

go.mod

@@ -51,7 +51,7 @@ require (
 
 require (
 	github.com/hashicorp/golang-lru/v2 v2.0.7
-	github.com/pires/go-proxyproto v0.11.0
+	github.com/pires/go-proxyproto v0.12.0
 	github.com/prometheus/exporter-toolkit v0.16.0
 	golang.org/x/net v0.52.0
 )

go.sum

@@ -319,8 +319,8 @@ github.com/petermattis/goid v0.0.0-20260226131333-17d1149c6ac6 h1:rh2lKw/P/EqHa7
 github.com/petermattis/goid v0.0.0-20260226131333-17d1149c6ac6/go.mod h1:pxMtw7cyUw6B2bRH0ZBANSPg+AoSud1I1iyJHI69jH4=
 github.com/philhofer/fwd v1.2.0 h1:e6DnBTl7vGY+Gz322/ASL4Gyp1FspeMvx1RNDoToZuM=
 github.com/philhofer/fwd v1.2.0/go.mod h1:RqIHx9QI14HlwKwm98g9Re5prTQ6LdeRQn+gXJFxsJM=
-github.com/pires/go-proxyproto v0.11.0 h1:gUQpS85X/VJMdUsYyEgyn59uLJvGqPhJV5YvG68wXH4=
-github.com/pires/go-proxyproto v0.11.0/go.mod h1:ZKAAyp3cgy5Y5Mo4n9AlScrkCZwUy0g3Jf+slqQVcuU=
+github.com/pires/go-proxyproto v0.12.0 h1:TTCxD66dU898tahivkqc3hoceZp7P44FnorWyo9d5vM=
+github.com/pires/go-proxyproto v0.12.0/go.mod h1:qUvfqUMEoX7T8g0q7TQLDnhMjdTrxnG0hvpMn+7ePNI=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/planetscale/vtprotobuf v0.6.1-0.20240319094008-0393e58bdf10 h1:GFCKgmp0tecUJ0sJuv4pzYCqS9+RGSn52M3FUwPs+uo=