Update built-in KAS to 19.2.1

Just bump the version
unless configuration file pkg/kascfg/kascfg_default.yml is not updated

- Update to 18.8.2
- Update to 18.8.4
- Update to 18.9.0
- Update to 18.9.1
- Update to 18.9.2
- Update to 18.10.0
- Update to 18.10.1
- Update to 18.10.3
- Update to 18.11.0
- Update to 18.11.1
- Update to 18.11.2
- Update to 18.11.3
- Update to 19.0.1
- Update to 19.0.2
- Update to 19.1.0
- Update to 19.1.1
- Update to 19.2.0
- Update to 19.2.1

Author: kkimurak

Dockerfile

@@ -10,7 +10,7 @@ ENV GITLAB_VERSION=${VERSION} \
     GITLAB_SHELL_VERSION=14.56.1 \
     GITLAB_PAGES_VERSION=19.2.1 \
     GITALY_SERVER_VERSION=19.2.1 \
-    GITLAB_AGENT_VERSION=18.5.1 \
+    GITLAB_AGENT_VERSION=19.2.1 \
     GITLAB_USER="git" \
     GITLAB_HOME="/home/git" \
     GITLAB_LOG_DIR="/var/log/gitlab" \