Updated wheel_linux_x86_64.yml

[MonitSharma]

Before submitting

Please complete the following checklist when submitting a PR:

• All new features must include a unit test.
  If you've fixed a bug or added code that should be tested, add a test to the
  tests directory!

• All new functions and code must be clearly commented and documented.
  If you do make documentation changes, make sure that the docs build and
  render correctly by running make docs.

• Ensure that the test suite passes, by running make test.

• Add a new entry to the .github/CHANGELOG.md file, summarizing the
  change, and including a link back to the PR.

• Ensure that code is properly formatted by running make format.

When all the above are checked, delete everything above the dashed
line and fill in the pull request template.

---

Context: Update wheel-builder compiler from GCC 10.x to GCC 11.x

Description of the Change: Installed GCC11 onto the building container, and updated the wheeler builder compiler to GCC 11 and g++ 11

Benefits: The update brings improved supports for newer C++ features.

Possible Drawbacks:

Related GitHub Issues: #368

[codecov]

Codecov Report

Merging #373 (f8afd85) into master (2405af8) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #373   +/-   ##
=======================================
  Coverage   99.88%   99.88%           
=======================================
  Files          49       49           
  Lines        4401     4401           
=======================================
  Hits         4396     4396           
  Misses          5        5           

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

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

[mlxd]

Thanks @MonitSharma
Since the builds are not proceeding due to an external 404 error, can we try one addition to the install commands (listed below):

[mlxd]

Thanks @MonitSharma
One final suggestion, as the update isn't being seen by the build-step. This is due to the shell for the CIBW_BEFORE_BUILD and actual compilation being different, so the environment is not carried across. I have added a suggestion that should fix this and use the new compiler.

[AmintorDusko]

Hi, @MonitSharma.Thank you for your contribution.
Nothing more from me.

[mlxd]

Looks great, thanks @MonitSharma Happy to approve.

We will manually update the dev ID before merging.

[mlxd]

Thanks again for your contribution @MonitSharma