@tom we have been receiving the same error since about the same time frame on zlib-ng.
.github: Test with old gcc and clang by using oldest supported ubuntu. · zlib-ng/zlib-ng@43eecaf
It happens in our forks and also in the main repository. It happens in only one of the CI instances, and the instance that fails is not consistent every time.
This issue also seems to be reported here:
CI failure due to - Too many uploads to this commit - Support - Codecov