- pkg/util/net/websocket.go: store ln parameter in struct to prevent
nil pointer panic when Addr() is called
- pkg/auth/oidc.go: replace unsynchronized []string with map + RWMutex
for subjectsFromLogin to fix data race across concurrent connections
* config: introduce ExecSource value source
* auth: introduce OidcTokenSourceAuthProvider
* auth: use OidcTokenSourceAuthProvider if tokenSource config is present on the client
* cmd: allow exec token source only if CLI flag was passed
