update electron to v43

electron/node_modules/builder-util/out/cscLink.d.ts

@@ -0,0 +1,12 @@
+/** Decodes a base64 CSC link to a Buffer, or returns null if the value is not base64. */
+export declare function decodeCscLinkBase64(link: string): Buffer | null;
+/** Resolves a CSC link file path, expanding `~/`, `file://`, and relative paths against `cwd`. */
+export declare function resolveCscLinkPath(cscLink: string, resourcesDir: string | undefined): string;
+/**
+ * Resolves a CSC link to its text content.
+ *
+ * Formats accepted:
+ * - Base64: detected by `data:…;base64,` prefix, length > 2048, or trailing `=`
+ * - File path: `~/…`, `file://…`, absolute, or relative to `cwd`
+ */
+export declare function loadCscLink(link: string, resourcesDir: string | undefined): Promise<string>;