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/api-keys/repositories/api-keys.repository.spec.ts

@@ -23,7 +23,7 @@ describe("ApiKeysRepository", () => {
 		// biome-ignore lint/suspicious/noThenProperty: Necessary to mock Drizzle's awaitable query builder
 		Object.defineProperty(obj, "then", {
 			value: function (onFulfilled: (arg0: unknown) => void) {
-				const result = (this as any).execute();
+				const result = (this as Record<string, unknown>).execute();
 				return Promise.resolve(result).then(onFulfilled);
 			},
 			configurable: true,