chore(deps): update dependency hairyhenderson/gomplate to v4

Author: renovate[bot]

Dockerfile

@@ -15,7 +15,7 @@ ARG CONTAINER_LIBRARY_VERSION
 # renovate: datasource=github-releases depName=pretalx/pretalx
 ENV PRETALX_VERSION="${BUILD_VERSION:-v2024.1.0}"
 # renovate: datasource=github-releases depName=hairyhenderson/gomplate
-ENV GOMPLATE_VERSION="${GOMPLATE_VERSION:-v3.11.7}"
+ENV GOMPLATE_VERSION="${GOMPLATE_VERSION:-v4.0.1}"
 # renovate: datasource=github-releases depName=thegeeklab/wait-for
 ENV WAIT_FOR_VERSION="${WAIT_FOR_VERSION:-v0.4.2}"
 # renovate: datasource=github-releases depName=owncloud-ops/container-library