casing in user pool groups ignored on role creation causes push failure

### How did you install the Amplify CLI?

_No response_

### If applicable, what version of Node.js are you using?

_No response_

### Amplify CLI Version

12.2.4

### What operating system are you using?

Mac

### Did you make any manual changes to the cloud resources managed by Amplify? Please describe the changes made.

no

### Describe the bug

Creating a user pool group say Admin and admin will causes the following failure

```
🛑 The following resources failed to deploy:
Resource Name: AdminGroupRole (AWS::IAM::Role)
Event Type: create
Reason: us-east-1_anccsdc-AdminGroupRole already exists
```

### Expected behavior

correct casing when creating user pool groups and no push failures

### Reproduction steps

1. `amplify init`
2. `amplify add auth`
3. add user pool groups -> `admin`
4. `amplify push`
5. `amplify update auth`
6. add user pool groups -> `Admin`
7. `amplify push`

### Project Identifier

_No response_

### Log output

```
# Put your logs below this line

```

### Additional information

_No response_

### Before submitting, please confirm:

- [X] I have done my best to include a minimal, self-contained set of instructions for consistently reproducing the issue.
- [X] I have removed any sensitive information from my code snippets and submission.