Update openjdk21-jre-headless from 21.0.7_p6-r0 to 21.0.8_p9-r0

Bumped openjdk21-jre-headless from 21.0.7_p6-r0 to 21.0.8_p9-r0 to include latest security and bug fixes.

Author: thomasleplus

xml/Dockerfile

@@ -20,7 +20,7 @@ RUN apk -U upgrade \
     libxml2-utils=2.13.8-r0 \
     libxslt=1.1.43-r3 \
     maven=3.9.9-r0 \
-    openjdk21-jre-headless=21.0.7_p6-r0 \
+    openjdk21-jre-headless=21.0.8_p9-r0 \
     py3-pip=25.1.1-r0 \
     python3=3.12.11-r0 \
     xmlindent=0.2.17-r3 \