!9 RISCV64: update spec.

From: @zke-012020 
Reviewed-by: @caodongxia 
Signed-off-by: @caodongxia

apache-mime4j.spec

@@ -1,6 +1,6 @@
 Name:                apache-mime4j
 Version:             0.8.7
-Release:             1
+Release:             2
 Summary:             Apache JAMES Mime4j
 License:             ASL 2.0 and Artistic
 URL:                 http://james.apache.org/mime4j
@@ -36,6 +36,9 @@ for p in core dom storage; do
 done
 
 %build
+%ifarch riscv64
+export JAVA_TOOL_OPTIONS="-Xmx4096m"
+%endif
 %mvn_build
 
 %install
@@ -49,6 +52,9 @@ done
 %license LICENSE NOTICE
 
 %changelog
+* Fri Feb 23 2024 zke_012020 <keer.oerv@isrc.iscas.ac.cn> - 0.8.7-2
+- Update spec for riscv64
+
 * Wed Dec 13 2023 Ge Wang <wang__ge@126.com> - 0.8.7-1
 - Upgrade to version 0.8.7