Fix GH actions

[AmintorDusko]

Context:
Some GH actions are failing. This PR will fix that.

Description of the Change:
Fix upload to PyPI actions and add a missing label for some Linux actions.

Benefits:

Possible Drawbacks:

Related GitHub Issues:

[github-actions]

Hello. You may have forgotten to update the changelog!
Please edit .github/CHANGELOG.md with:

• A one-to-two sentence description of the change. You may include a small working example for new features.
• A link back to this PR.
• Your name (or GitHub username) in the contributors section.

[codecov]

Codecov Report

Merging #476 (c84dcb0) into master (4933137) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #476   +/-   ##
=======================================
  Coverage   97.22%   97.22%           
=======================================
  Files         142      142           
  Lines       16420    16420           
=======================================
  Hits        15964    15964           
  Misses        456      456           

Files Changed	Coverage Δ
pennylane_lightning/core/_version.py	100.00% <100.00%> (ø)

[AmintorDusko]

Since we can observe that the upload-pypi actions are working just fine, I removed the testing.
Let me know your thoughts.

[vincentmr]

I removed the testing.

I'm not sure I can see those mods? Do you mean CIBW_TEST_COMMAND and related steps?

[AmintorDusko]

I removed the testing.

I'm not sure I can see those mods? Do you mean CIBW_TEST_COMMAND and related steps?

What I meant to say was that I removed the testing regarding the upload-pypi.
I removed comments to some lines that were enabling the upload to Pypi.

[vincentmr]

In essence, we can't use matrix.os because of the OS version, right? Looks good to me, thanks @AmintorDusko

[AmintorDusko]

In essence, we can't use matrix.os because of the OS version, right? Looks good to me, thanks @AmintorDusko

Partially yes, but more than this, matrix.os writes the OS name in a different capitalization scheme.