[X] bug report
[ ] feature request

# Detailed description

The AWS API supports Authorization parameters as GET parameters, e.g. here's a GET request to SendMessage on SQS:

```
curl 'http://localhost:4566/000000000000/SomeQueue.fifo?Action=SendMessage&MessageGroupId=Default&MessageDeduplicationId=1615597859837&MessageBody=%7B%22gateway_id%22%3A%20%2204e73c80-3539-499c-92a4-a0b106c2f6ab%22%7D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=test%2F20210313%2Fus-east-1%2Fsqs%2Faws4_request&X-Amz-Date=20210313T011059Z&X-Amz-Expires=86400000&X-Amz-SignedHeaders=host&X-Amz-Signature=2c652c7bc9a3b75579db3d987d1e6dd056f0ac776c1e1d4ec91e2ce84e5ad3ae'
```

## Expected behavior

Should send the message and return receipt information.

## Actual behavior

Returns...

```
<?xml version="1.0" encoding="UTF-8"?>
<Error>
    <Code>NoSuchBucket</Code>
    <Message>The specified bucket does not exist</Message>
    <BucketName>000000000000</BucketName>
    <RequestID>7a62c49f-347e-4fc4-9331-6e8eEXAMPLE</RequestID>
</Error>
```

from localstack.services.generic_proxy import ProxyListener, start_proxy_server, modify_and_forward
from localstack.services.sqs.sqs_listener import is_sqs_queue_url
from localstack.utils.server.http2_server import HTTPErrorResponse
from localstack.services.cloudwatch.cloudwatch_listener import PATH_GET_RAW_METRICS
LOG = logging.getLogger(__name__)
HEADER_KILL_SIGNAL = 'x-localstack-kill'
BOOTSTRAP_LOCK = threading.RLock()
GZIP_ENCODING = 'GZIP'
IDENTITY_ENCODING = 'IDENTITY'
S3 = 's3'
class ProxyListenerEdge(ProxyListener):
    def forward_request(self, method, path, data, headers):
        if path.split('?')[0] == '/health':
            return serve_health_endpoint(method, path, data)
        if method == 'POST' and path == '/graph':
            return serve_resource_graph(data)
        
        headers.get(HEADER_KILL_SIGNAL) and os._exit(0)
        target = headers.get('x-amz-target', '')
        auth_header = headers.get('authorization', '')
        host = headers.get('host', '')
        headers[HEADER_LOCALSTACK_EDGE_URL] = 'https://%s' % host
        
        api, port, path, host = get_api_from_headers(headers, method=method, path=path, data=data)
        set_default_region_in_headers(headers)
        if port and int(port) < 0:
            return 404
        if not port:
            api, port = get_api_from_custom_rules(method, path, data, headers) or (api, port)
        if not port: