Update Litlogger Integration to latest version

[justusschock]

What does this PR do?

Upgrades the litlogger integration, it's internals, the tests and the required version to the latest litlogger.

These unittests just make sure we call the correct APIs, full integration tests against the released version as well as the development version will live in the litlogger repo

Before submitting

• Was this discussed/agreed via a GitHub issue? (not for typos and docs)
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• Did you make sure your PR does only one thing, instead of bundling different changes together?
• Did you make sure to update the documentation with your changes? (if necessary)
• Did you write any new necessary tests? (not for typos and docs)
• Did you verify new and existing tests pass locally with your changes?
• Did you list all the breaking changes introduced by this pull request?
• Did you update the CHANGELOG? (not for typos, docs, test updates, or minor internal changes/refactors)

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---

📚 Documentation preview 📚: https://pytorch-lightning--21591.org.readthedocs.build/en/21591/

[github-actions]

⚡ Required checks status: All passing 🟢

Groups summary

🟢 pytorch_lightning: Tests workflow

Check ID	Status
pl-cpu-guardian	success	✅

These checks are required after the changes to requirements/pytorch/loggers.info, src/lightning/pytorch/loggers/litlogger.py, tests/tests_pytorch/loggers/conftest.py, tests/tests_pytorch/loggers/test_litlogger.py.

🟢 pytorch_lightning: lit GPU

Check ID	Status
pytorch.yml / Lit Job (nvidia/cuda:12.1.1-devel-ubuntu22.04, pytorch, 3.10)	success	✅
pytorch.yml / Lit Job (lightning, 3.12)	success	✅
pytorch.yml / Lit Job (pytorch, 3.12)	success	✅

These checks are required after the changes to requirements/pytorch/loggers.info, src/lightning/pytorch/loggers/litlogger.py, tests/tests_pytorch/loggers/conftest.py, tests/tests_pytorch/loggers/test_litlogger.py.

🟢 Benchmarks

Check ID	Status
benchmark.yml / Lit Job (fabric)	success	✅
benchmark.yml / Lit Job (pytorch)	success	✅

These checks are required after the changes to requirements/pytorch/loggers.info, src/lightning/pytorch/loggers/litlogger.py.

🟢 pytorch_lightning: Docs

Check ID	Status
docs-make (pytorch, doctest)	success	✅
docs-make (pytorch, html)	success	✅

These checks are required after the changes to src/lightning/pytorch/loggers/litlogger.py, requirements/pytorch/loggers.info.

🟢 mypy

Check ID	Status
mypy	success	✅

These checks are required after the changes to requirements/pytorch/loggers.info, src/lightning/pytorch/loggers/litlogger.py.

🟢 install

Check ID	Status
install-pkg-guardian	success	✅

These checks are required after the changes to src/lightning/pytorch/loggers/litlogger.py, requirements/pytorch/loggers.info.

---

Thank you for your contribution! 💜

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[codecov]

Codecov Report

❌ Patch coverage is 77.04918% with 14 lines in your changes missing coverage. Please review.
✅ Project coverage is 79%. Comparing base (283ce77) to head (884ffa1).
⚠️ Report is 16 commits behind head on master.
✅ All tests successful. No failed tests found.

❗ There is a different number of reports uploaded between BASE (283ce77) and HEAD (884ffa1). Click for more details.

HEAD has 2452 uploads less than BASE

Flag	BASE (283ce77)	HEAD (884ffa1)
cpu	590	42
python	54	3
lightning_fabric	159	0
pytest	294	0
lightning	269	15
python3.11	107	6
python3.12	160	12
python3.10	54	3
python3.13	54	9
python3.12.7	161	9
pytorch2.3	27	3
pytest-full	296	42
pytorch2.2.2	26	3
pytorch_lightning	162	27
pytorch2.6	27	3
pytorch2.1	54	6
pytorch2.9	27	6
pytorch2.5.1	27	3
pytorch2.8	54	6
pytorch2.4.1	27	3
pytorch2.7	27	3

Additional details and impacted files

@@            Coverage Diff            @@
##           master   #21591     +/-   ##
=========================================
- Coverage      87%      79%     -8%     
=========================================
  Files         270      267      -3     
  Lines       24078    24036     -42     
=========================================
- Hits        20863    18963   -1900     
- Misses       3215     5073   +1858