Bug fixes:

• [http3] Bump github.com/quic-go/quic-go to v0.55.0 (#12156 by kevinpollet)
• [kv] Fix KV key name used to check if connection is alive (#12162 by kevinpollet)
• [server] Bump golang.org/x/net to v0.46.0 (#12143 by kevinpollet)
• [tracing] Bump gopkg.in/DataDog/dd-trace-go.v1 to v1.74.6 (#12083 by hannahkm)