[Tests] use @babel/eslint-parser instead of babel-eslint

[MichaelDeBoey]

babel-eslint is deprecated in favor of @babel/eslint-parser

https://babeljs.io/blog/2020/07/13/the-state-of-babel-eslint

[codecov]

Codecov Report

Merging #811 (1f5416d) into master (0021489) will not change coverage.
The diff coverage is n/a.

❗ Current head 1f5416d differs from pull request most recent head aed7a20. Consider uploading reports for the commit aed7a20 to get more accurate results

@@ Coverage Diff @@ ## master #811 +/- ## ======================================= Coverage 99.24% 99.24% ======================================= Files 98 98 Lines 1453 1453 Branches 477 477 ======================================= Hits 1442 1442 Misses 11 11 

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 0021489...aed7a20. Read the comment docs.

[fgblomqvist]

Anything blocking this from getting merged?

[MichaelDeBoey]

Only a review from @ljharb

[ljharb]

also, the word "chore" is very inaccurate; chores are burdensome and changes like this are helpful.

[gajus]

@ljharb Did you want the commit to be renamed to feat:?

[ljharb]

nah, conventional commits are garbage :-) i just haven't gotten back to it since the last update.

[ljharb]

I think because the parser added an engines declaration in v7.11 that drops node 11, npm selects eslint 6 to match, and then that fails the peer dep requirement. Let's see if this does it.

[ljharb]

k, turns out all versions of babel's eslint parser have a peer dep on eslint 7, which has an engines that doesn't include node 11, so that's the issue here. alternatively we could stop testing eslint 7 on node 11, which i'll probably just do in a followup commit.

[gajus]

🎉