Move @ava/babel to devDependencies

[jvasseur]

Please check if the PR fulfills these requirements

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Other: dependencies fix.

What is the current behavior? (You can also link to an open issue here)

When installing babel-loader, @ava/babel is installed with it while it's not used

What is the new behavior?

It's not installed anymore.

Does this PR introduce a breaking change?

• Yes
• No

Other information:

Adding it to dependencies instead of devDependencies was probably a mistake, this fixes it.

[nicolo-ribaudo]

Whoops thanks!

[pieh]

Any chance we could get patch release with this change?

On top of installing it unnecessarily, it also cause some problems due to engines.node - excerpt from yarn installation:

error @ava/babel@1.0.1: The engine "node" is incompatible with this module. Expected version ">=10.18.0 <11 || >=12.14.0 <13 || >=13.5.0". Got "10.16.0"
error Found incompatible module.

(@ava/babel@1.0.1's engines.node is more strict that of babel-loader itself )

[nicolo-ribaudo]

Yup, I will release later today.

[nicolo-ribaudo]

Published as 8.2.1