Unable to delete VPC connector

**Community Note**
* Please vote on this issue by adding a 👍 reaction to the original issue to help the community and maintainers prioritize this request
* Please do not leave "+1" or "me too" comments, they generate extra noise for issue followers and do * not help prioritize the request
If you are interested in working on this issue or have submitted a pull request, please leave a comment

**Tell us about your request**
What do you want us to build?
Attempted to delete an unused VPC Connector through the AWS CLI and the error message received is unhelpful
```
PAGER=
aws apprunner list-services
{
"ServiceSummaryList": []
}

aws apprunner delete-vpc-connector --vpc-connector-arn

An error occurred (InvalidRequestException) when calling the DeleteVpcConnector operation: Provided VPC connector arn is being used by other services. ARN:
```
Details as to which "other services" are still using the connector would help users understand how to resolve the issue.

**Describe alternatives you've considered**
Deleting through the AWS Console equally produces an unhelpful error message:

```
Failed to delete VPC Connector
Provided VPC connector arn is being used by other services. ARN:
```

**Additional context**
Anything else we should know?
To clarify, this issue seems to occur after deleting an AppRunner service that previously have this VPC connector attached.

**Attachments**
If you think you might have additional information that you'd like to include via an attachment, please do - we'll take a look. (Remember to remove any personally-identifiable information.)
N/A