ci: update golang-ci parallel parameter

Author: andrew-tx

.golangci.yml

@@ -29,4 +29,9 @@ linters-settings:
 
 run:
   modules-download-mode: vendor
-  timeout: 10m
+  timeout: 15m
+  # The default concurrency value is the number of available CPU.
+  concurrency: 2
+  # Allow multiple parallel golangci-lint instances running.
+  # If false (default) - golangci-lint acquires file lock on start.
+  allow-parallel-runners: false