…config

Changes:
* Migrate from Karma to jquery-test-runner
* Add tests on real browsers
* Run tests on GitHub Actions
* Migrate ESLint from v7 to v9 with a flat config
* Switch from UglifyJS to SWC, enforce ES 5
* Add `.editorconfig` & `.gitattributes` files
* Update `.gitignore` to include more patterns from jQuery Core

Closes jquerygh-247

It was supported in 3.1.13, so we shouldn't drop it in a minor update; we'll
do that in 4.0.0.

Closes jquerygh-248

1. Update links
2. Make code style match other jQuery projects
3. Fix build & test instructions.
4. Don't mention Karma, we don't use it anymore

Fixes jquerygh-185

Changes:
1. Don't commit the minified file to the `main` branch.
2. Move the source file to `src/`.
3. Compute the version during the build.
4. Add a `release-it`-based release process.

Closes jquerygh-250

Changes:
1. Drop support for IE <11.
2. Drop support for older jQuery; only support newest versions from the 1.x
   & 2.x lines and 3.6.4 or newer.
3. Drop support for non-wheel backing native events.
4. Drop the `mousewheel` and `unmousewheel` shorthands.
5. Move `jquery` from `dependencies` to `peerDependencies` & `devDependencies`.

Closes jquerygh-252

Bumps [undici](https://github.com/nodejs/undici) to 6.21.2 and updates ancestor dependency [release-it](https://github.com/release-it/release-it). These dependencies need to be updated together.

Closes jquerygh-253

Updates `undici` from 6.21.1 to 6.21.2
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v6.21.1...v6.21.2)

Updates `release-it` from 18.1.2 to 19.0.2
- [Release notes](https://github.com/release-it/release-it/releases)
- [Changelog](https://github.com/release-it/release-it/blob/main/CHANGELOG.md)
- [Commits](release-it/release-it@18.1.2...19.0.2)

---
updated-dependencies:
- dependency-name: undici
  dependency-version: 6.21.2
  dependency-type: indirect
- dependency-name: release-it
  dependency-version: 19.0.2
  dependency-type: direct:development
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Bumps [form-data](https://github.com/form-data/form-data) from 4.0.2 to 4.0.4.
- [Release notes](https://github.com/form-data/form-data/releases)
- [Changelog](https://github.com/form-data/form-data/blob/master/CHANGELOG.md)
- [Commits](form-data/form-data@v4.0.2...v4.0.4)

Closes jquerygh-255

---
updated-dependencies:
- dependency-name: form-data
  dependency-version: 4.0.4
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

JTR doesn't take into account the jump from Safari 18 to 26,
so we need to specify versions explicitly. Also, while BrowserStack
already added macOS Tahoe with Safari 26, it's not a stable release
yet, so we need to test on Safari 17 as well.

Ref jquery/jquery#5687
Ref jquery/jquery-test-runner#17

Bumps [tmp](https://github.com/raszi/node-tmp) and [@inquirer/editor](https://github.com/SBoudrias/Inquirer.js). These dependencies needed to be updated together.

Updates `tmp` from 0.2.3 to 0.2.5
- [Changelog](https://github.com/raszi/node-tmp/blob/master/CHANGELOG.md)
- [Commits](raszi/node-tmp@v0.2.3...v0.2.5)

Updates `@inquirer/editor` from 4.2.11 to 4.2.18
- [Release notes](https://github.com/SBoudrias/Inquirer.js/releases)
- [Commits](https://github.com/SBoudrias/Inquirer.js/compare/@inquirer/editor@4.2.11...@inquirer/editor@4.2.18)

Closes jquerygh-257

---
updated-dependencies:
- dependency-name: tmp
  dependency-version: 0.2.5
  dependency-type: indirect
- dependency-name: "@inquirer/editor"
  dependency-version: 4.2.18
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Closes jquerygh-251

- Fixes an issue with running tests in Edge in IE mode

Closes jquerygh-260

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.21 to 4.17.23.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.21...4.17.23)

Closes jquerygh-261

---
updated-dependencies:
- dependency-name: lodash
  dependency-version: 4.17.23
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>