build: speed up linting by 1.5x (#12908)

.circleci/config.yml

@@ -175,7 +175,7 @@ jobs:
         default: ""
     docker:
       - image: *GOLANG_IMAGE
-    resource_class: large
+    resource_class: xlarge
     environment:
       GOTAGS: "" # No tags for OSS but there are for enterprise
       GOARCH: "<<parameters.go-arch>>"
@@ -191,7 +191,7 @@ jobs:
       - run:
           name: lint
           command: &lintcmd |
-            golangci-lint run --build-tags="$GOTAGS" -v --concurrency 2
+            golangci-lint run --build-tags="$GOTAGS" -v
       - run:
           name: lint api
           working_directory: api

.golangci.yml

@@ -69,3 +69,4 @@ linters-settings:
 
 run:
   timeout: 10m
+  concurrency: 4