[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>
```

subj.OU = 'Testing'
    subj.CN = 'localhost'
    
    
    serial_number = serial_number or 1001
    cert.set_version(2)
    cert.set_serial_number(serial_number)
    cert.gmtime_adj_notBefore(0)
    cert.gmtime_adj_notAfter(2 * 365 * 24 * 60 * 60)
    cert.set_issuer(cert.get_subject())
    cert.set_pubkey(k)
    alt_names = b'DNS:localhost,DNS:test.localhost.atlassian.io,DNS:localhost.localstack.cloud,IP:127.0.0.1'
    cert.add_extensions([
        crypto.X509Extension(b'subjectAltName', False, alt_names),
        crypto.X509Extension(b'basicConstraints', True, b'CA:false'),
        crypto.X509Extension(b'keyUsage', True, b'nonRepudiation,digitalSignature,keyEncipherment'),
        crypto.X509Extension(b'extendedKeyUsage', True, b'serverAuth')
    ])
    cert.sign(k, 'SHA256')
    cert_file = StringIO()
    key_file = StringIO()
    cert_file.write(to_str(crypto.dump_certificate(crypto.FILETYPE_PEM, cert)))
    key_file.write(to_str(crypto.dump_privatekey(crypto.FILETYPE_PEM, k)))
    cert_file_content = cert_file.getvalue().strip()
    key_file_content = key_file.getvalue().strip()
    file_content = '%s\n%s' % (key_file_content, cert_file_content)
    if target_file:
        key_file_name = '%s.key' % target_file
        cert_file_name = '%s.crt' % target_file