fix(ci): use runs-on: ubuntu-latest (non-empty) for Gitea Actions v5

src/lib/ci-workflow-contract.test.ts

@@ -34,12 +34,12 @@ describe("CI workflow", () => {
 			workflow.indexOf("check:"),
 			workflow.indexOf("\n  deploy:"),
 		);
-		expect(checkJob).toContain("runs-on: []");
+		expect(checkJob).toContain("runs-on: ubuntu-latest");
 	});
 
 	it("deploy job runs on host runner", () => {
 		const deployJob = workflow.slice(workflow.indexOf("\n  deploy:"));
-		expect(deployJob).toContain("runs-on: []");
+		expect(deployJob).toContain("runs-on: ubuntu-latest");
 	});
 
 	it("check includes toolchain check", () => {