build(deps): bump coverage from 7.6.0 to 7.6.4 in /plc4py

Bumps [coverage](https://github.com/nedbat/coveragepy) from 7.6.0 to 7.6.4.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](coveragepy/coveragepy@7.6.0...7.6.4)

---
updated-dependencies:
- dependency-name: coverage
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

plc4py/requirements.txt

@@ -23,7 +23,7 @@ black==24.4.2
 build==1.2.1
 cfgv==3.4.0
 click==8.1.7
-coverage==7.6.0
+coverage==7.6.4
 distlib==0.3.8
 filelock==3.15.4
 flake8==7.1.0