fix: Fix VERSION file missing

The path for the version file was not currectly setup.
It was looking for VERSION in the current dir (where python was running),
not where the CLI is installed.

codecov_cli/__init__.py

@@ -1,4 +1,9 @@
-with open("VERSION", encoding="utf-8") as f:
+from os import path
+
+here = path.abspath(path.dirname(__file__))
+
+
+with open(path.join(here, "..", "VERSION"), encoding="utf-8") as f:
     version_number = f.readline().strip()
 
 __version__ = version_number