encode uploadid

[mifi]

fixes #4649

[github-actions]

Diff output files

diff --git a/packages/@uppy/aws-s3/lib/index.js b/packages/@uppy/aws-s3/lib/index.js
index bcff951..1cda298 100644
--- a/packages/@uppy/aws-s3/lib/index.js
+++ b/packages/@uppy/aws-s3/lib/index.js
@@ -294,9 +294,12 @@ export default class AwsS3Multipart extends BasePlugin {
     this.assertHost("listParts");
     throwIfAborted(signal);
     const filename = encodeURIComponent(key);
-    return _classPrivateFieldLooseBase(this, _client)[_client].get(`s3/multipart/${uploadId}?key=${filename}`, {
-      signal,
-    }).then(assertServerError);
+    return _classPrivateFieldLooseBase(this, _client)[_client].get(
+      `s3/multipart/${encodeURIComponent(uploadId)}?key=${filename}`,
+      {
+        signal,
+      },
+    ).then(assertServerError);
   }
   completeMultipartUpload(file, _ref4, oldSignal) {
     var _signal2;
@@ -364,7 +367,7 @@ export default class AwsS3Multipart extends BasePlugin {
     }
     const filename = encodeURIComponent(key);
     return _classPrivateFieldLooseBase(this, _client)[_client].get(
-      `s3/multipart/${uploadId}/${partNumber}?key=${filename}`,
+      `s3/multipart/${encodeURIComponent(uploadId)}/${partNumber}?key=${filename}`,
       {
         signal,
       },