build(deps): bump github.com/open-policy-agent/opa from 0.64.1 to 0.65.0

Bumps [github.com/open-policy-agent/opa](https://github.com/open-policy-agent/opa) from 0.64.1 to 0.65.0.
- [Release notes](https://github.com/open-policy-agent/opa/releases)
- [Changelog](https://github.com/open-policy-agent/opa/blob/main/CHANGELOG.md)
- [Commits](https://github.com/open-policy-agent/opa/compare/v0.64.1...v0.65.0)

---
updated-dependencies:
- dependency-name: github.com/open-policy-agent/opa
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

vendor/github.com/open-policy-agent/opa/logging/logging.go

@@ -3,6 +3,7 @@ package logging
 import (
 	"context"
 	"io"
+	"net/http"
 
 	"github.com/sirupsen/logrus"
 )
@@ -210,10 +211,15 @@ const reqCtxKey = requestContextKey("request-context-key")
 // RequestContext represents the request context used to store data
 // related to the request that could be used on logs.
 type RequestContext struct {
-	ClientAddr string
-	ReqID      uint64
-	ReqMethod  string
-	ReqPath    string
+	ClientAddr         string
+	ReqID              uint64
+	ReqMethod          string
+	ReqPath            string
+	HTTPRequestContext HTTPRequestContext
+}
+
+type HTTPRequestContext struct {
+	Header http.Header
 }
 
 // Fields adapts the RequestContext fields to logrus.Fields.