Use latest Java Spring Boot stack as default (#439)

it was set to a previous version originally to use a schema version 2.1
but in fact the default version was already upgraded to 2.2 3 months ago
db0c583

Signed-off-by: Aurélien Pupier <[email protected]>

Author: apupier

stacks/java-springboot/stack.yaml

@@ -7,8 +7,8 @@ versions:
   # 1.3.0, 1.4.0: with JDK 17
   - version: 1.3.0
   - version: 1.4.0
-    default: true # should have one and only one default version
   - version: 2.0.0
   # 2.1.0, 2.2.0: with JDK 17
   - version: 2.1.0
   - version: 2.2.0
+    default: true # should have one and only one default version