chore(deps): update ubuntu:latest docker digest to 59a458b (#2477)

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@sha256:728785b59223d755e3e5c5af178fab1be7031f3522c5ccd7a0b32b80d8248123
+FROM ubuntu:latest@sha256:59a458b76b4e8896031cd559576eac7d6cb53a69b38ba819fb26518536368d86
 
 # Set the terminal type to Xterm.
 ENV TERM=xterm