Add more handler exceptions and fix an issue in the Service Validate, make it throws when the PGT is not available.

BREAKING CHANGE: yes

This is the kind of Content-Type header that EU Login is sending.

Update phpstan/phpstan-strict-rules requirement from ^0.12 to ^0.12 || ^1.0

Bump actions/cache from 2.1.7 to 3

Bumps [actions/cache](https://github.com/actions/cache) from 2.1.7 to 3.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](https://github.com/actions/cache/compare/v2.1.7...v3

)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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