[MM-61890] Add support for marking as ESR for release script, add help, remove update YML for ESR patch releases (#3277)

Co-authored-by: Mattermost Build <build@mattermost.com>

scripts/patch_updater_yml.sh

@@ -11,6 +11,13 @@ if [ "$RELEASE_VERSION" == "" ]; then
     RELEASE_VERSION="latest"
 fi
 
+# If we are on a ESR branch, we don't want to generate the auto-updater yml for patch releases
+if [ -e .esr ] && [[ "$VERSION" =~ ^[0-9]+\.[0-9]+\.[1-9][0-9]* ]]; then
+    echo "ESR branch, skipping auto-updater yml generation"
+    rm ./release/"${RELEASE_VERSION}"*.yml
+    exit 0
+fi
+
 echo "${RELEASE_VERSION}"
 if compgen -G "./release/${RELEASE_VERSION}*.yml" > /dev/null; then
     for i in ./release/${RELEASE_VERSION}*.yml; do