chore: exclude some EC2 enum values (#34194)

### Issue # (if applicable)

N/A

### Checklist
- [X] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: moelasmar

tools/@aws-cdk/enum-updater/lib/exclude_values.json

@@ -76,5 +76,19 @@
         "DataResourceType": {
             "comment": "New DataResourceType need further change. Backfilling enum is not enough"
         }
+    },
+    "ec2": {
+        "VpcEndpointIpAddressType": {
+            "values": ["NOT_SPECIFIED"],
+            "comment": "Although NOT_SPECIFIED is a valid value, but for CDK customers can just not provide the value for that property"
+        },
+        "VpcEndpointDnsRecordIpType": {
+            "values": ["NOT_SPECIFIED"],
+            "comment": "Although NOT_SPECIFIED is a valid value, but for CDK customers can just not provide the value for that property"
+        },
+        "VpcEndpointPrivateDnsOnlyForInboundResolverEndpoint": {
+            "values": ["NOTSPECIFIED"],
+            "comment": "Although NOTSPECIFIED is a valid value, but for CDK customers can just not provide the value for that property"
+        }
     }
-}
+}