try this

Jenkinsfile

@@ -47,14 +47,7 @@ pipeline {
         timeout(time: 5, unit: 'MINUTES')
       }
       steps {
-        script {
-          sh "list=\$(git tag -l release-* --sort=-\"version:refname\")"
-          sh "tag=\${$list:0:16}"
-          sh "commitid=\$(git rev-list -n 1 \$tag)"
-          sh "date=\$(git show -s --format=%ci $commitid)"
-          sh "commits=\$(git log --pretty="%s %cI" --no-merges --since=$date)"
-          sh "echo $commits"
-        }
+        sh "./scripts/release-notifications/notes.sh"
         // sh "docker build -f ./Dockerfile.release " +
         //     "--build-arg WEBHOOK=${WEBHOOK} " +
         //     "--build-arg TEAMS_HOST=${TEAMS_HOST} " +

scripts/release-notifications/notes.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+list=$(git tag -l release-* --sort=-"version:refname")
+
+tag=${list:0:16}
+
+commitid=$(git rev-list -n 1 $tag)
+
+date=$(git show -s --format=%ci $commitid)
+
+commits=$(git log --pretty="%s %cI" --no-merges --since="$date")
+
+echo $commits
+
+echo $(node -v)