chore(package): add tzdata to deb images (#12609)

The tzdata package supports standard timezone database info.
So users can set or show convenient timezone info.

Fix #FTI-5698

build/dockerfiles/deb.Dockerfile

@@ -20,6 +20,7 @@ COPY ${KONG_ARTIFACT_PATH}${KONG_ARTIFACT} /tmp/kong.deb
 RUN apt-get update \
     && apt-get -y upgrade \
     && apt-get -y autoremove \
+    && DEBIAN_FRONTEND=noninteractive apt-get install -y tzdata \
     && apt-get install -y --no-install-recommends /tmp/kong.deb \
     && rm -rf /var/lib/apt/lists/* \
     && rm -rf /tmp/kong.deb \

changelog/unreleased/kong/add_tzdata.yml

@@ -0,0 +1,3 @@
+message: |
+  Add package `tzdata` to DEB Docker image for convenient timezone setting.
+type: dependency