aws_completer outputs "^M" after every suggestion in MINGW(64) on Windows Terminal

### Describe the bug

Attempting to use Windows version `aws_completer` for bash completion in MINGW64 results in the output containing `^M` characters after every suggestion.

### Regression Issue

- [ ] Select this option if this issue appears to be a regression.

### Expected Behavior

Output should not contain `^M` after every suggestion.

### Current Behavior

Output contains `^M` after every suggestion.

### Reproduction Steps

1. Have the Windows version of AWS CLI installed
2. Open a Windows Terminal of Git Bash (MINGW64)
3. Run `complete -C "/c/Program\ Files/Amazon/AWSCLIV2/aws_completer" aws
4. Type `aws e[TAB]`

### Possible Solution

_No response_

### Additional Information/Context

I'm currently using the Git Bash implementation of MINGW64 in Windows Terminal which is my default command line processor. I have not tried using any other alternative terminal so I don't know if this behavior is global or limited to just Windows Terminal.

### CLI version used

aws-cli/2.22.14 Python/3.12.6 Windows/11 exe/AMD64

### Environment details (OS name and version, etc.)

Windows 11 Enterprise 23H2 Build 22631.4037 FP 1000.22700.1027.0