chore(deps): update docker.io/library/ubuntu:24.04 docker digest to 4fbb8e6

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Dockerfile

@@ -130,7 +130,7 @@ COPY --from=run-clang-tidy-fix /cilium/proxy/*.txt /
 #
 # Extract installed cilium-envoy binaries to an otherwise empty image
 #
-FROM docker.io/library/ubuntu:24.04@sha256:786a8b558f7be160c6c8c4a54f9a57274f3b4fb1491cf65146521ae77ff1dc54
+FROM docker.io/library/ubuntu:24.04@sha256:4fbb8e6a8395de5a7550b33509421a2bafbc0aab6c06ba2cef9ebffbc7092d90
 LABEL maintainer="maintainer@cilium.io"
 # install ca-certificates package
 RUN apt-get update && apt-get upgrade -y \

Dockerfile.builder

@@ -3,7 +3,7 @@
 # Also note that if build fails due to C++ internal error or similar,
 # it is possible that the image build needs more RAM than available by
 # default on non-Linux docker installs.
-FROM docker.io/library/ubuntu:24.04@sha256:786a8b558f7be160c6c8c4a54f9a57274f3b4fb1491cf65146521ae77ff1dc54 AS base
+FROM docker.io/library/ubuntu:24.04@sha256:4fbb8e6a8395de5a7550b33509421a2bafbc0aab6c06ba2cef9ebffbc7092d90 AS base
 LABEL maintainer="maintainer@cilium.io"
 ARG TARGETARCH
 # Setup TimeZone to prevent tzdata package asking for it interactively