chore: bump pip-tools to 6.5.0 to resolve pip bug
chore: bump pip-tools to 6.5.0 to resolve pip bug

make upgrade failed because of https://github.com/jazzband/pip-tools/issues/1558

EDUlib/edx-ora2,EDUlib/edx-ora2,EDUlib/edx-ora2,EDUlib/edx-ora2