Chore: Upgrade Go version to 1.19.1 (backport) (#55733)

Upgrades the version of Go used to build Grafana v9.1.x to 1.19.1.

Backport of Chore: Upgrade Go to 1.19.1 #54902
Backport of Chore: Update swagger to v0.30.2 #55159

pkg/plugins/backendplugin/secretsmanagerplugin/secretsmanager.pb.go

@@ -7,10 +7,11 @@
 package secretsmanagerplugin
 
 import (
-	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
-	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
 	sync "sync"
+
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 )
 
 const (

pkg/plugins/backendplugin/secretsmanagerplugin/secretsmanager_grpc.pb.go

@@ -8,6 +8,7 @@ package secretsmanagerplugin
 
 import (
 	context "context"
+
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
 	status "google.golang.org/grpc/status"