Upgrade mc-image-helper to tweak file download logic (#3469)

Author: itzg

Dockerfile

@@ -48,7 +48,7 @@ RUN easy-add --var os=${TARGETOS} --var arch=${TARGETARCH}${TARGETVARIANT} \
   --var version=${MC_SERVER_RUNNER_VERSION} --var app=mc-server-runner --file {{.app}} \
   --from ${GITHUB_BASEURL}/itzg/{{.app}}/releases/download/{{.version}}/{{.app}}_{{.version}}_{{.os}}_{{.arch}}.tar.gz
 
-ARG MC_HELPER_VERSION=1.41.9
+ARG MC_HELPER_VERSION=1.41.11
 ARG MC_HELPER_BASE_URL=${GITHUB_BASEURL}/itzg/mc-image-helper/releases/download/${MC_HELPER_VERSION}
 # used for cache busting local copy of mc-image-helper
 ARG MC_HELPER_REV=1

docs/versions/java.md

@@ -78,7 +78,7 @@ where `java tag` still refers to the first column of the table above and `releas
 
 ### Stable image tag
 
-The `stable` image tag combines the benefits of `latest` and [release versions](#release-versions) since it shifts to refer to the most recently released version.
+The `stable` image tag combines the benefits of `latest` and [release versions](#release-versions) since it shifts to refer to the most recently released version. There is also a per-variant stable tag, formatted as `stable-{variant}`.
 
 ## Version compatibilities