NO-JIRA: update appveyor image, need Maven > 3.6.3 as recent plugins require it

gemmellr · gemmellr · commit 0c526c2e18ae · 2024-09-20T17:30:06.000+01:00
(cherry picked from commit 46c9938)
diff --git a/appveyor.yml b/appveyor.yml
@@ -1,6 +1,8 @@
 version: '{build}'
 skip_tags: true
 clone_depth: 30
+image:
+  - Visual Studio 2019
 
 environment:
   matrix:
