Fix golangci-lint v2.6.0 configuration compatibility

Remove deprecated configuration options from the issues section that are no longer supported in golangci-lint v2.6.0. The properties 'exclude-use-default' and 'exclude-rules' have been removed as they cause schema validation errors in the new version.

Author: digiserg

.golangci.yml

@@ -61,12 +61,5 @@ formatters:
     - goimports     # Check import formatting
 
 issues:
-  exclude-use-default: false
   max-issues-per-linter: 0
   max-same-issues: 0
-  exclude-rules:
-    # Exclude some linters from running on tests files
-    - path: _test\.go
-      linters:
-        - errcheck
-        - gosec