fix some code issues

cmd/mytoken-server/mytoken-dbGarbageCollector/main.go

internal/config/config.go

internal/endpoints/consent/pkg/capability.go

internal/endpoints/token/super/pkg/authCodeFlowRequest.go

pkg/model/oidcFlow.go

pkg/mytokenlib/supertoken.go

shared/utils/jwtutils/jwtutils.go

shared/utils/utils.go