Do not warn when version not in manifest-file (#462)

This will spam the GitHub summary with warnings as soon as a new version
is released and no new setup-uv version containing this version in the
distributed manifest-file is released

Closes: #461

README.md

@@ -542,23 +542,6 @@ Running `actions/checkout` after `setup-uv` **is not supported**.
 No, `setup-uv` alone wont install any libraries from your `pyproject.toml` or `requirements.txt`, it only sets up `uv`.
 You should run `uv sync` or `uv pip install .` separately, or use `uv run ...` to ensure necessary dependencies are installed.
 
-### Why is a changed cache not detected and not the full cache uploaded?
-
-When `setup-uv` starts it has to know whether it is better to download an existing cache
-or start fresh and download every dependency again.
-It does this by using a combination of hashes calculated on the contents of e.g. `uv.lock`.
-
-By calculating these hashes and combining them in a key `setup-uv` can check
-if an uploaded cache exists for this key.
-If yes (e.g. contents of `uv.lock` did not change since last run) the dependencies in the cache
-are up to date and the cache will be downloaded and used.
-
-Details on determining which files will lead to different caches can be read under
-[cache-dependency-glob](#cache-dependency-glob)
-
-Some dependencies will never be uploaded to the cache and will be downloaded again on each run
-as described in [disable-cache-pruning](#disable-cache-pruning)
-
 ## Acknowledgements
 
 `setup-uv` was initially written and published by [Kevin Stillhammer](https://github.com/eifinger)