This change adds Go 1.22 as a build target and drops support for Go 1.20 and older. The golang.org/x/exp/slog import is migrated to log/slog.
Slog has been part of the Go standard library since Go 1.21. Therefore we are dropping support for older Go versions. This is in line of our support policy of "the latest two Go versions".
* feat(op): user slog for logging
integrate with golang.org/x/exp/slog for logging.
provide a middleware for request scoped logging.
BREAKING CHANGES:
1. OpenIDProvider and sub-interfaces get a Logger()
method to return the configured logger;
2. AuthRequestError now takes the complete Authorizer,
instead of only the encoder. So that it may use its Logger() method.
3. RequestError now takes a Logger as argument.
* use zitadel/logging
* finish op and testing
without middleware for now
* minimum go version 1.19
* update go mod
* log value testing only on go 1.20 or later
* finish the RP and example
* ping logging release
