Add perl 5.40

Author: haarg

index.js

@@ -6,7 +6,8 @@ let available = [
     "5.10", "5.12", "5.14", "5.16", "5.18",
     "5.20", "5.22", "5.24", "5.26", "5.28",
     "5.30", "5.32", "5.34", "5.36", "5.38",
-    "devel",
+    "5.40",
+	"devel",
 ];
 
 try {
@@ -26,4 +27,4 @@ try {
     core.setOutput('perl-versions', JSON.stringify(filtered));
 } catch (error) {
     core.setFailed(error.message);
-}
+}