unstrict golangci-lint version

Author: kyoh86

.github/workflows/test.yml

@@ -53,8 +53,6 @@ jobs:
           go-version: 1.24
       - name: Search diagnostics
         uses: golangci/golangci-lint-action@v6
-        with:
-          version: v1.61.0
   test-covers:
     name: Take test coverages
     runs-on: ubuntu-latest