chore(lint): exclude modernize newexpr rule for Ptr calls

The modernize/newexpr rule incorrectly suggests replacing github.Ptr(x)
with new(x), but new() takes a type not an expression — the auto-fix
generates invalid Go code. Exclude this specific rule pattern.

Author: vmvarela

.golangci.yml

@@ -44,6 +44,9 @@ linters:
         linters:
           - unparam
         text: always receives
+      - linters:
+          - modernize
+        text: "newexpr: call of Ptr"
       - linters:
           - staticcheck
         text: "SA1019.*ByID.*deprecated"