🔥 drop Python 3.8 support

[burgholzer]

Description

Python 3.8 will reach end of live in October 2024. Qiskit is already issuing deprecation warnings since a couple of releases when using it on Python 3.8. This PR officially drops support for Python 3.8 in mqt-qcec.

Checklist:

• [x] The pull request only contains commits that are related to it.
• [x] I have added appropriate tests and documentation.
• [x] I have made sure that all CI jobs on GitHub pass.
• [x] The pull request introduces no new warnings and follows the project's style guidelines.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 95.2%. Comparing base (4fbe57c) to head (05c000e). Report is 1 commits behind head on main.

Additional details and impacted files

[](https://app.codecov.io/gh/cda-tum/mqt-qcec/pull/454?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cda-tum) ```diff @@ Coverage Diff @@ ## main #454 +/- ## ======================================= - Coverage 95.3% 95.2% -0.1% ======================================= Files 40 40 Lines 1836 1837 +1 Branches 224 224 ======================================= Hits 1750 1750 - Misses 86 87 +1 ``` | [Flag](https://app.codecov.io/gh/cda-tum/mqt-qcec/pull/454/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cda-tum) | Coverage Δ | | |---|---|---| | [cpp](https://app.codecov.io/gh/cda-tum/mqt-qcec/pull/454/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cda-tum) | `95.6% <ø> (-0.1%)` | :arrow_down: | | [python](https://app.codecov.io/gh/cda-tum/mqt-qcec/pull/454/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cda-tum) | `93.7% <ø> (ø)` | | [see 2 files with indirect coverage changes](https://app.codecov.io/gh/cda-tum/mqt-qcec/pull/454/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cda-tum)