fix(tests): replace any with Record<string, unknown> in repository tests

- Updated type assertions in repository test files to use `Record<string, unknown>` instead of `any`.

backend/src/media/media.controller.spec.ts

@@ -51,9 +51,7 @@ describe("MediaController", () => {
 
 		it("should throw NotFoundException if path is missing", async () => {
 			const res = {} as unknown as Response;
-			await expect(controller.getFile("", res)).rejects.toThrow(
-				NotFoundException,
-			);
+			await expect(controller.getFile("", res)).rejects.toThrow(NotFoundException);
 		});
 
 		it("should throw NotFoundException if file is not found", async () => {