fix(ci): move exclusions under linters configuration

Move path exclusions to linters.exclusions.paths as required by
golangci-lint v2 configuration schema

Author: jackspirou

.golangci.yml

@@ -11,6 +11,13 @@ issues:
   max-same-issues: 10
 
 linters:
+  exclusions:
+    # Which file paths to exclude: they will be analyzed, but issues from them won't be reported
+    paths:
+      - "vendor/"
+      - "scripts/"
+      - "testdata/"
+  
   enable:
     # Default linters
     - govet        # Reports suspicious constructs