ci: do not fail codecov action if error

[ydcjeff]

Description:

Set fail_ci_if_error to false not to fail the CI if codecov error occurs.

fix #2043

Check list:

• New tests are added (if a new feature is added)
• New doc strings: description and/or example code are in RST format
• Documentation is updated (if required)

[vfdev-5]

Thanks a lot @ydcjeff !