Merge pull request from GHSA-7j9p-67mm-5g87

* fix: Tool can only push grade to value in config

Before this commit, LTI tools were able to push grades to any block
simply by modifying or creating a new line item with a `resource_link_id` containing a valid block.

This commit closes that loophole and resolves
security advisory GHSA-7j9p-67mm-5g87.

* chore: create release version

Co-authored-by: Zach Hancock <zhancock@edx.org>