Trims leading ./ from filenames when repackaging reproducible packa…

…ges (#37253)

When we repack tar.gz files, implicitly `./` is added in front of
the files being repacked. While this does not change anything when
you unpack the files, if you extract individual files by name, you
might expect to not have `./` there (this is what happens when
helm installs chart from .tgz file).

We are stripping the `./` during repackaging now.

dev/breeze/src/airflow_breeze/utils/reproducible.py

@@ -137,6 +137,8 @@ def reset(tarinfo):
                         arcname = entry
                         if prepend_path is not None:
                             arcname = os.path.normpath(os.path.join(prepend_path, arcname))
+                        if arcname.startswith("./"):
+                            arcname = arcname[2:]
                         tar_file.add(entry, filter=reset, recursive=False, arcname=arcname)
         os.rename(temp_file, dest_archive)
     return result