### Summary
Remove -x in version-sync script to stop printing all commands and
arguments and improve readability.
### Test
`make check` and `make check-version` no longer print all the commands
and arguments.
(unstructured) shreyanid@Shreyas-MBP-2 unstructured % make check-version
scripts/version-sync.sh -c \
-f "unstructured/__version__.py" semver
From github.com:Unstructured-IO/unstructured
* branch main -> FETCH_HEAD
version sync would make no changes to unstructured/__version__.py.
If on the main branch already, it does not make sense to check if the latest commit is the same non-dev version.
This fixes an annoyance where the CI Lint job would fail on release main commits, but besides that was not causing any other issues.
* Added script to check/sync versions using CHANGELOG.md as a source of truth.
* Script currently only syncs __version__.py but can easily be extended to cover other files by adding the files to an array in the script.
* Also updated sphinx conf.py to get version dynamically from __version__.py
