@uppy/aws-s3: fix signing on client for bucket name with dots

[aduh95]

Using dots in bucket names is discouraged by AWS documentation, but it is still allowed. In order to support such buckets without getting a TLS error, we need to move the bucket name parameter from domain name to URL path.

[github-actions]

Diff output files

diff --git a/packages/@uppy/aws-s3-multipart/lib/createSignedURL.js b/packages/@uppy/aws-s3-multipart/lib/createSignedURL.js
index 6937ed2..060fa6d 100644
--- a/packages/@uppy/aws-s3-multipart/lib/createSignedURL.js
+++ b/packages/@uppy/aws-s3-multipart/lib/createSignedURL.js
@@ -61,8 +61,8 @@ export default async function createSignedURL(_ref2) {
     partNumber,
   } = _ref2;
   const Service = "s3";
-  const host = `${bucketName}.${Service}.${Region}.amazonaws.com`;
-  const CanonicalUri = `/${
+  const host = `${Service}.${Region}.amazonaws.com`;
+  const CanonicalUri = `/${bucketName}/${
     encodeURI(Key).replace(/[;?:@&=+$,#!'()*]/g, c => `%${c.charCodeAt(0).toString(16).toUpperCase()}`)
   }`;
   const payload = "UNSIGNED-PAYLOAD";