Update pyjwt requirement from ==2.7.* to ==2.8.* (#3892)

Updates the requirements on [pyjwt](https://github.com/jpadilla/pyjwt) to permit the latest version.
- [Release notes](https://github.com/jpadilla/pyjwt/releases)
- [Changelog](https://github.com/jpadilla/pyjwt/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/jpadilla/pyjwt/compare/2.7.0...2.8.0)

---
updated-dependencies:
- dependency-name: pyjwt
  dependency-type: direct:production
...

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pyproject.toml

@@ -73,7 +73,7 @@ dependencies = [
   "packaging",
   "paypalrestsdk==1.13.*",
   "paypal-checkout-serversdk==1.0.*",
-  "PyJWT==2.7.*",
+  "PyJWT==2.8.*",
   "phonenumberslite==8.13.*",
   "Pillow==9.5.*",
   "pretix-plugin-build",