chore: remove useless istanbul deps (#563)

Author: 9aoy

e2e/projects/coverage.test.ts

@@ -41,5 +41,5 @@ describe('test projects coverage', () => {
     expect(
       fs.existsSync(join(__dirname, 'fixtures/coverage/index.html')),
     ).toBeTruthy();
-  });
+  }, 15000);
 });

packages/coverage-istanbul/package.json

@@ -22,9 +22,7 @@
   "dependencies": {
     "swc-plugin-coverage-instrument": "^0.0.30",
     "istanbul-lib-coverage": "^3.2.2",
-    "istanbul-lib-instrument": "^6.0.3",
     "istanbul-lib-report": "^3.0.1",
-    "istanbul-lib-source-maps": "^5.0.6",
     "istanbul-reports": "^3.1.7"
   },
   "devDependencies": {
@@ -34,9 +32,7 @@
     "@types/node": "^22.16.5",
     "typescript": "^5.9.2",
     "@types/istanbul-lib-coverage": "^2.0.6",
-    "@types/istanbul-lib-instrument": "^1.7.7",
     "@types/istanbul-lib-report": "^3.0.3",
-    "@types/istanbul-lib-source-maps": "^4.0.4",
     "@types/istanbul-reports": "^3.0.4"
   }
 }