…mplicit return types (#6330)

* [promise-function-async] Only allow unions in explicit return types

When we return a union containing a promise from a function
implicitly, it's often a mistake. This commit makes it so if the
return type is explicit, any `Promise` in the return type (whether
it's part of a union or not) will flag the function. If it is
intentional, make the return type explicit.

Fixes #6329

* Refrain from renaming the type-util, instead add an optional fourth param.

fix(website-eslint): playground eslint build issue

….0 (#6502)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

* chore(deps): update nx to v15.7.2

* chore: run nx migrate for @nrwl/workspace v15.7.2

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Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: JamesHenry <james@henry.sc>

…ayground (#6496)

Not sure if this is why the job is being skipped.

If this is the right fix, we'll want to update https://typescript-eslint.io/maintenance/releases#1-pre-release-preparation too.

…e path errors (#6491)

* fix(typescript-estree): check for relative/root paths in printing file path errors

* Missing slash in a test case

* Update packages/typescript-estree/src/create-program/createProjectProgram.ts

Co-authored-by: Armano <armano2@users.noreply.github.com>

* Post-suggestion format

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Co-authored-by: Armano <armano2@users.noreply.github.com>