ci: let golangci-lint track the Go toolchain

.github/workflows/lint.yaml

@@ -23,4 +23,4 @@ jobs:
       - name: Lint
         uses: golangci/golangci-lint-action@v9
         with:
-          version: v2.11.4
+          version: latest

.golangci.yml

@@ -16,6 +16,10 @@ linters:
     - unparam
     - unused
   settings:
+    goconst:
+      # A literal repeated across table-driven test cases reads better than a
+      # constant the reader has to look up.
+      ignore-tests: true
     govet:
       enable:
         - shadow

fields.go

@@ -24,25 +24,25 @@ func indirect(v reflect.Value, decodingNull bool) (json.Unmarshaler, encoding.Te
 	// If v is a named type and is addressable,
 	// start with its address, so that if the type has pointer methods,
 	// we find them.
-	if v.Kind() != reflect.Ptr && v.Type().Name() != "" && v.CanAddr() {
+	if v.Kind() != reflect.Pointer && v.Type().Name() != "" && v.CanAddr() {
 		v = v.Addr()
 	}
 	for {
 		// Load value from interface, but only if the result will be
 		// usefully addressable.
 		if v.Kind() == reflect.Interface && !v.IsNil() {
 			e := v.Elem()
-			if e.Kind() == reflect.Ptr && !e.IsNil() && (!decodingNull || e.Elem().Kind() == reflect.Ptr) {
+			if e.Kind() == reflect.Pointer && !e.IsNil() && (!decodingNull || e.Elem().Kind() == reflect.Pointer) {
 				v = e
 				continue
 			}
 		}
 
-		if v.Kind() != reflect.Ptr {
+		if v.Kind() != reflect.Pointer {
 			break
 		}
 
-		if v.Elem().Kind() != reflect.Ptr && decodingNull && v.CanSet() {
+		if v.Elem().Kind() != reflect.Pointer && decodingNull && v.CanSet() {
 			break
 		}
 		if v.IsNil() {
@@ -171,7 +171,7 @@ func typeFields(t reflect.Type) []field {
 				index[len(f.index)] = i
 
 				ft := sf.Type
-				if ft.Name() == "" && ft.Kind() == reflect.Ptr {
+				if ft.Name() == "" && ft.Kind() == reflect.Pointer {
 					// Follow pointer.
 					ft = ft.Elem()
 				}