Update default XNAT version to 1.8.6

Kate Alpert · Kate Alpert · commit b489f05a8862 · 2022-10-12T09:09:49.000-06:00
diff --git a/default.env b/default.env
@@ -1,4 +1,4 @@
-XNAT_VERSION=1.8.5
+XNAT_VERSION=1.8.6
 XNAT_MIN_HEAP=256m
 XNAT_MAX_HEAP=4g
 XNAT_SMTP_ENABLED=false
