Fix badge link for GitHub Actions workflow check.yaml - #34

Moves every
[`tox-dev/github-workflows`](https://github.com/tox-dev/github-workflows)
pin to
[6.2.0](https://github.com/tox-dev/github-workflows/releases/tag/6.2.0).
👋 The GitHub Release now credits first-time contributors: the publish
step takes the New Contributors list from GitHub's generated notes for
the range since the previous tag and places it above the package and
comparison links
([#34](tox-dev/github-workflows#34)). The
changelog file no longer carries that list.

The pins also pick up the 6.0.2 to 6.1.0 changes: release asset names
match the names GitHub stores
([#29](tox-dev/github-workflows#29)), and the
rendered notes list several packages on one row with an ecosystem emoji
([#32](tox-dev/github-workflows#32)).