Set default signature verification for supported distributions (#1246)

* Default signature verification for supported distributions

* Delegate signature defaults to installers

src/distributions/base-installer.ts

@@ -68,7 +68,8 @@ export abstract class JavaBase {
       installerOptions.setDefault !== undefined
         ? installerOptions.setDefault
         : true;
-    this.verifySignature = installerOptions.verifySignature ?? false;
+    this.verifySignature =
+      installerOptions.verifySignature ?? this.supportsSignatureVerification();
     this.verifySignaturePublicKey = installerOptions.verifySignaturePublicKey;
   }