bump knative serving to 0.37.1

Signed-off-by: Kenny Leung <kleung@chainguard.dev>

go.mod

@@ -23,7 +23,7 @@ require (
 	knative.dev/net-istio v0.36.2
 	knative.dev/networking v0.0.0-20230419144338-e5d04e805e50
 	knative.dev/pkg v0.0.0-20230418073056-dfad48eaa5d0
-	knative.dev/serving v0.37.0
+	knative.dev/serving v0.37.1
 )
 
 require (

go.sum

@@ -850,8 +850,8 @@ knative.dev/networking v0.0.0-20230419144338-e5d04e805e50 h1:X9rPBYr7Vrm075q0iXT
 knative.dev/networking v0.0.0-20230419144338-e5d04e805e50/go.mod h1:o2MyGpGfU5DoSAWCE2f/jnSC9GjGOplCslbA99yDkGo=
 knative.dev/pkg v0.0.0-20230418073056-dfad48eaa5d0 h1:EFQcoUo8I4bc+U3y6tR1B3ONYZSHWUdAfI7Vh7dae8g=
 knative.dev/pkg v0.0.0-20230418073056-dfad48eaa5d0/go.mod h1:2qWPP9Gjh9Q7ETti+WRHnBnGCSCq+6q7m3p/nmUQviE=
-knative.dev/serving v0.37.0 h1:hp/HconGRzv0kh2az9I/af1K1DY3NG3zcyiVc2rHyOk=
-knative.dev/serving v0.37.0/go.mod h1:v0Xbfp7olb0Gljm5l4qNuLsIf8/2p1rIt/mphxvx1z0=
+knative.dev/serving v0.37.1 h1:msn1sJ9yVBVWu/5slqkpSXXqCEQRIysHR+fKMO4EXlI=
+knative.dev/serving v0.37.1/go.mod h1:v0Xbfp7olb0Gljm5l4qNuLsIf8/2p1rIt/mphxvx1z0=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
 rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=

vendor/knative.dev/serving/pkg/reconciler/revision/resolve.go

@@ -42,6 +42,8 @@ const (
 	// Kubernetes CA certificate bundle is mounted into the pod here, see:
 	// https://kubernetes.io/docs/tasks/tls/managing-tls-in-a-cluster/#trusting-tls-in-a-cluster
 	k8sCertPath = "/var/run/secrets/kubernetes.io/serviceaccount/ca.crt"
+
+	tlsMinVersionEnvKey = "TAG_TO_DIGEST_TLS_MIN_VERSION"
 )
 
 // newResolverTransport returns an http.Transport that appends the certs bundle
@@ -64,13 +66,26 @@ func newResolverTransport(path string, maxIdleConns, maxIdleConnsPerHost int) (*
 	transport.MaxIdleConns = maxIdleConns
 	transport.MaxIdleConnsPerHost = maxIdleConnsPerHost
 	transport.TLSClientConfig = &tls.Config{
-		MinVersion: tls.VersionTLS13,
+		MinVersion: tlsMinVersionFromEnv(tls.VersionTLS12),
 		RootCAs:    pool,
 	}
 
 	return transport, nil
 }
 
+func tlsMinVersionFromEnv(defaultTLSMinVersion uint16) uint16 {
+	switch tlsMinVersion := os.Getenv(tlsMinVersionEnvKey); tlsMinVersion {
+	case "1.2":
+		return tls.VersionTLS12
+	case "1.3":
+		return tls.VersionTLS13
+	case "":
+		return defaultTLSMinVersion
+	default:
+		panic(fmt.Sprintf("the environment variable %q has to be either '1.2' or '1.3'", tlsMinVersionEnvKey))
+	}
+}
+
 // Resolve resolves the image references that use tags to digests.
 func (r *digestResolver) Resolve(
 	ctx context.Context,

vendor/modules.txt

@@ -1293,7 +1293,7 @@ knative.dev/pkg/webhook/resourcesemantics/defaulting
 knative.dev/pkg/webhook/resourcesemantics/validation
 knative.dev/pkg/webhook/testing
 knative.dev/pkg/websocket
-# knative.dev/serving v0.37.0
+# knative.dev/serving v0.37.1
 ## explicit; go 1.18
 knative.dev/serving/cmd/activator
 knative.dev/serving/cmd/autoscaler