[GCS] Issue with uploading files with cyrillic characters in name

[tcyran]

Hello

• s3proxy version: Docker image with sha-82e50ee tag
• backend: GCS bucket
• deployment env: kubernetes
• example file name: EN_invoice — копия 499.pdf

I'm trying to upload file which contains cyrillic chars in name, and it's failing with strange error:

[s3proxy] E 08-01 11:03:12.059 S3Proxy-Jetty-20 o.j.h.i.JavaUrlHttpCommandExecutorService:93 |::] error after writing 558020/558039 bytes to https://storage.googleapis.com/upload/storage/v1/b/example-bucket/o?uploadType=multipart
java.io.IOException: too many bytes written

if I remove those cyrillic chars and em dash (—) it works properly.