Investigate occasional GSOC Failures on Testnet

[gacevicljubisa]

The GSOC check usually runs successfully on the testnet. However, in some cases, it fails with the following error:

{"check":"pt-gsoc","time":"2025-07-04T08:46:41","error":"sequential: timeout: not all messages received"}

[acha-bill]

This PR was the fix:
ethersphere/bee#5037

Then the follow-up pr: ethersphere/bee#5081