scripts: fix release script

Motivation:

When we upgraded gradle from 8.8 to 8.12 the JVM reporting format changed
and that broke our release script in the part that ensures we're using the
correct JVM to build docs.

Modifications:

- Fix the script

scripts/release.sh

@@ -54,7 +54,7 @@ if [ "$#" -ne "2" ]; then
 fi
 
 # Enforce JDK17 to get latest LTS javadoc format/features (search, etc.):
-java_version=$(./gradlew --no-daemon -version | grep ^JVM: | awk -F\. '{gsub(/^JVM:[ \t]*/,"",$1); print $1"."$2}')
+java_version=$(./gradlew --no-daemon -version | grep 'Launcher JVM:' | awk -F\. '{gsub(/Launcher JVM:[ \t]*/,"",$1); print $1"."$2}')
 if [ "$java_version" != "17.0" ]; then
   echo "Docs can be published only using Java 17, current version: $java_version"
   exit 1