Fixes application/zip attachments upload with process-allure-reports.py

[MaxGelbakhiani]

Faced the following problem with running neofs-testcases on neofs-s3-gw repo fork:

Exception: Command failed: NEOFS_CLI_PASSWORD=*** neofs-cli --rpc-endpoint st1.t5.fs.neo.org:8080 --wallet wallet.json  object put --cid 9GX3Bvpb5RFapar5g11zwwoBGDdxcSs35764xchZTVUF --timeout 600s --expire-at 9607 --file /home/runner/work/neofs-s3-gw/neofs-s3-gw/allure-report/data/attachments/700b2dbd13ff3e47.zip --attributes RunNumber=12-1695225472,FilePath=12-1695225472/data/attachments/700b2dbd13ff3e47.zip ContentType=application/zip
[41](https://github.com/MaxGelbakhiani/neofs-s3-gw/actions/runs/6251114048/job/16971515668#step:28:42)
Error code: 1

Stderr: Error: unknown command "ContentType=application/zip" for "neofs-cli object put"
[103](https://github.com/MaxGelbakhiani/neofs-s3-gw/actions/runs/6251114048/job/16971515668#step:28:104)
unknown command "ContentType=application/zip" for "neofs-cli object put"

https://github.com/MaxGelbakhiani/neofs-s3-gw/actions/runs/6251114048/job/16971515668#step:28:104

Adding a single comma sign fixes that error.

[roman-khimov]

That's literally nspcc-dev/neofs-node#2427, it just behaves better with 0.38.0 thanks to nspcc-dev/neofs-node#1941.