chore(deps): update ubuntu:latest docker digest to 9cbed75 (#2386)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: bitcoin-tools

docker/Dockerfile

@@ -1,7 +1,7 @@
 # syntax=docker/dockerfile:1
 # Ubuntu is known for its popularity and user-friendly design.
 # This Dockerfile offers a balance between stability, security, and modernity.
-FROM ubuntu:latest@sha256:f3b7f1bdfaf22a0a8db05bb2b758535fe0e70d82bea4206f7549f89aa12922f4
+FROM ubuntu:latest@sha256:9cbed754112939e914291337b5e554b07ad7c392491dba6daf25eef1332a22e8
 
 # Set the terminal type to Xterm.
 ENV TERM=xterm