chore: enable parallel runners for golangci-lint (#349)

This allows multiple golangci-lint instances to run simultaneously
by preventing the default file lock acquisition at startup.

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: JAORMX

Taskfile.yml

@@ -25,4 +25,4 @@ tasks:
   lint:
     desc: Run linter
     cmds:
-      - golangci-lint run --timeout 5m0s --config .golangci.yml
+      - golangci-lint run --allow-parallel-runners --timeout 5m0s --config .golangci.yml