Gio/release with static analysis (#110)

* Fix issue missing tree_sitter_python

* Explicitly make FORK the multiprocessing option to choose

This is because in the MacOS release build (at least) I keep seeing errors like:
```
Error: No such option: --multiprocessing-fork
Usage: main [OPTIONS] COMMAND [ARGS]...
Try 'main --help' for help.

Error: No such option: -B
Usage: main [OPTIONS] COMMAND [ARGS]...
Try 'main --help' for help.
```

Which are from instantiating new processes, for sure.
This SO question: https://stackoverflow.com/questions/67999589/multiprocessing-with-pool-throws-error-on-m1-macbook
Indicates it might be the way it creates new processes and suggests using "fork" explicitly.
We're giving that a go.

codecov_cli/services/staticanalysis/__init__.py

@@ -3,7 +3,7 @@
 import logging
 import typing
 from functools import partial
-from multiprocessing import Pool
+from multiprocessing import get_context
 from pathlib import Path
 
 import click
@@ -41,7 +41,7 @@ async def run_analysis_entrypoint(
         length=len(files),
         label="Analyzing files",
     ) as bar:
-        with Pool(processes=numberprocesses) as pool:
+        with get_context("fork").Pool(processes=numberprocesses) as pool:
             file_results = pool.imap_unordered(mapped_func, files)
             for x in file_results:
                 bar.update(1, x)