Attempt to build Debian slim using newer tzdata (#17)

\### Changed
- Update Debian slim dependency tzdata (using bullseye-updates repository) 2021a-1+deb11u4 -> 2021a-1+deb11u8

CHANGELOG.md

@@ -13,7 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Update Eclipse Temurin Ubuntu image from 17.0.3_7-jre -> 17.0.5_8-jre-(jammy|focal)
 - Update Eclipse Temurin Debian image from 17.0.3_7-jdk -> 17.0.5_8-jdk
 - Update Debian slim image from stable-20220622-slim -> stable-20221205-slim
-- Update Debian slim dependency tzdata 2021a-1+deb11u4 -> 2021a-1+deb11u5
+- Update Debian slim dependency tzdata (using bullseye-updates repository) 2021a-1+deb11u4 -> 2021a-1+deb11u8
 - Update Debian slim dependency curl 7.74.0-1.3+deb11u1 -> 7.74.0-1.3+deb11u3
 - Update Debian slim dependency locales 2.31-13+deb11u3 -> 2.31-13+deb11u4
 - Docker images tags from Ubuntu generic to specific ((multipaper|multipaper-master) -> (multipaper|multipaper-master)-(jammy|focal))

build/debian-slim/Dockerfile.master

@@ -21,7 +21,7 @@ ENV JAVA_HOME=/opt/java/openjdk \
 
 ## Taken from eclipse-temurin setup, but with version pinning and dumb-init
 RUN apt-get update \
-    && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends tzdata=2021a-1+deb11u5 curl=7.74.0-1.3+deb11u3 ca-certificates=20210119 fontconfig=2.13.1-4.2 locales=2.31-13+deb11u4 binutils=2.35.2-2 dumb-init=1.2.5-1 \
+    && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends tzdata=2021a-1+deb11u8 curl=7.74.0-1.3+deb11u3 ca-certificates=20210119 fontconfig=2.13.1-4.2 locales=2.31-13+deb11u4 binutils=2.35.2-2 dumb-init=1.2.5-1 \
     && echo "en_US.UTF-8 UTF-8" >> /etc/locale.gen \
     && locale-gen en_US.UTF-8 \
     && rm -rf /var/lib/apt/lists/*

build/debian-slim/Dockerfile.server

@@ -21,7 +21,7 @@ ENV JAVA_HOME=/opt/java/openjdk \
 
 ## Taken from eclipse-temurin setup, but with version pinning and dumb-init
 RUN apt-get update \
-    && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends tzdata=2021a-1+deb11u5 curl=7.74.0-1.3+deb11u3 ca-certificates=20210119 fontconfig=2.13.1-4.2 locales=2.31-13+deb11u4 binutils=2.35.2-2 dumb-init=1.2.5-1 \
+    && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends tzdata=2021a-1+deb11u8 curl=7.74.0-1.3+deb11u3 ca-certificates=20210119 fontconfig=2.13.1-4.2 locales=2.31-13+deb11u4 binutils=2.35.2-2 dumb-init=1.2.5-1 \
     && echo "en_US.UTF-8 UTF-8" >> /etc/locale.gen \
     && locale-gen en_US.UTF-8 \
     && rm -rf /var/lib/apt/lists/*