[13.0][CHG] datamodel: Use more permissive licence: AGPL-> LGPL

[davejames]

forward port of #166

[OCA-git-bot]

This PR has the approved label and has been created more than 5 days ago. It should therefore be ready to merge by a maintainer (or a PSC member if the concerned addon has no declared maintainer). 🤖

[simahawk]

/ocabot merge major

[OCA-git-bot]

On my way to merge this fine PR!
Prepared branch 13.0-ocabot-merge-pr-168-by-simahawk-bump-major, awaiting test results.

[OCA-git-bot]

@simahawk your merge command was aborted due to failed check(s), which you can inspect on this commit of 13.0-ocabot-merge-pr-168-by-simahawk-bump-major.

After fixing the problem, you can re-issue a merge command. Please refrain from merging manually as it will most probably make the target branch red.

[lmignon]

/ocabot merge major

[OCA-git-bot]

Hey, thanks for contributing! Proceeding to merge this for you.
Prepared branch 13.0-ocabot-merge-pr-168-by-lmignon-bump-major, awaiting test results.

[OCA-git-bot]

@lmignon your merge command was aborted due to failed check(s), which you can inspect on this commit of 13.0-ocabot-merge-pr-168-by-lmignon-bump-major.

After fixing the problem, you can re-issue a merge command. Please refrain from merging manually as it will most probably make the target branch red.

[lmignon]

/ocabot merge major

[OCA-git-bot]

On my way to merge this fine PR!
Prepared branch 13.0-ocabot-merge-pr-168-by-lmignon-bump-major, awaiting test results.

[OCA-git-bot]

Congratulations, your PR was merged at 872260b. Thanks a lot for contributing to OCA. ❤️