Add dependabot (#142)

* Create dependabot.yml

* Bump postcss from 8.4.20 to 8.4.31

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.20 to 8.4.31.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/postcss/postcss/compare/8.4.20...8.4.31)

---
updated-dependencies:
- dependency-name: postcss
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

* Bump fast-xml-parser and is-svg

Bumps [fast-xml-parser](https://github.com/NaturalIntelligence/fast-xml-parser) and [is-svg](https://github.com/sindresorhus/is-svg). These dependencies needed to be updated together.

Updates `fast-xml-parser` from 3.21.1 to 4.3.2
- [Release notes](https://github.com/NaturalIntelligence/fast-xml-parser/releases)
- [Changelog](https://github.com/NaturalIntelligence/fast-xml-parser/blob/master/CHANGELOG.md)
- [Commits](https://github.com/NaturalIntelligence/fast-xml-parser/compare/v3.21.1...v4.3.2)

Updates `is-svg` from 4.3.2 to 4.4.0
- [Release notes](https://github.com/sindresorhus/is-svg/releases)
- [Commits](https://github.com/sindresorhus/is-svg/compare/v4.3.2...v4.4.0)

---
updated-dependencies:
- dependency-name: fast-xml-parser
  dependency-type: indirect
- dependency-name: is-svg
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

* Bump semver from 6.3.0 to 6.3.1 in /analytics

Bumps [semver](https://github.com/npm/node-semver) from 6.3.0 to 6.3.1.
- [Release notes](https://github.com/npm/node-semver/releases)
- [Changelog](https://github.com/npm/node-semver/blob/v6.3.1/CHANGELOG.md)
- [Commits](https://github.com/npm/node-semver/compare/v6.3.0...v6.3.1)

---
updated-dependencies:
- dependency-name: semver
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

* Bump @babel/traverse from 7.20.10 to 7.23.4

Bumps [@babel/traverse](https://github.com/babel/babel/tree/HEAD/packages/babel-traverse) from 7.20.10 to 7.23.4.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v7.23.4/packages/babel-traverse)

---
updated-dependencies:
- dependency-name: "@babel/traverse"
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

---------

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

package.json

@@ -83,7 +83,7 @@
     "plugin-error": "^2.0.1",
     "png-to-ico": "^2.1.8",
     "popper.js": "^1.16.0",
-    "postcss": "^8.4.20",
+    "postcss": "^8.4.31",
     "preact": "^10.11.3",
     "rev-hash": "^3.0.0",
     "rev-path": "^2.0.0",