Update W3037 to skip non strings (#4023)

Author: kddejong

src/cfnlint/rules/resources/iam/Permissions.py

@@ -40,6 +40,8 @@ def validate(
         actions = ensure_list(instance)
 
         for action in actions:
+            if not validator.is_type(action, "string"):
+                continue
             if action == "*":
                 continue
             if ":" not in action:

test/unit/rules/resources/iam/test_iam_permissions.py

@@ -30,6 +30,7 @@ def rule():
         ("Invalid string with starting astrisk", "s3:*Foo", 1),
         ("Invalid service", "foo:Bar", 1),
         ("Empty string", "", 1),
+        ("A function", {"Ref": "MyParameter"}, 0),
     ],
 )
 def test_permissions(name, instance, err_count, rule, validator):