Set workspace.resolver = "2" and avoid cargo warning

rib · rib · commit b590ec5484d5 · 2023-10-16T21:29:01.000+01:00
diff --git a/Cargo.toml b/Cargo.toml
@@ -1,4 +1,5 @@
 [workspace]
+resolver = "2"
 members = ["android-activity"]
 
 exclude = ["examples"]
