Bump tmp and web-ext (#48)

Bumps [tmp](https://github.com/raszi/node-tmp) to 0.2.5 and updates ancestor dependency [web-ext](https://github.com/mozilla/web-ext). These dependencies need 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](https://github.com/raszi/node-tmp/compare/v0.2.3...v0.2.5)

Updates `web-ext` from 8.8.0 to 8.10.0
- [Release notes](https://github.com/mozilla/web-ext/releases)
- [Commits](https://github.com/mozilla/web-ext/compare/8.8.0...8.10.0)

---
updated-dependencies:
- dependency-name: tmp
  dependency-version: 0.2.5
  dependency-type: indirect
- dependency-name: web-ext
  dependency-version: 8.10.0
  dependency-type: direct:development
...

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

package.json

@@ -1,6 +1,6 @@
 {
   "devDependencies": {
-    "web-ext": "^8.0.0"
+    "web-ext": "^8.10.0"
   },
   "scripts": {
     "start:firefox": "web-ext run --source-dir .",