chore: bump rollup from 2.60.2 to 2.70.2 in /web3.js (#24793)

Bumps [rollup](https://github.com/rollup/rollup) from 2.60.2 to 2.70.2.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](rollup/rollup@v2.60.2...v2.70.2)

---
updated-dependencies:
- dependency-name: rollup
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -119,7 +119,7 @@
     "nyc": "^15.1.0",
     "prettier": "^2.3.0",
     "rimraf": "3.0.2",
-    "rollup": "2.60.2",
+    "rollup": "2.70.2",
     "rollup-plugin-dts": "^4.0.0",
     "rollup-plugin-node-polyfills": "^0.2.1",
     "rollup-plugin-terser": "^7.0.2",

yarn.lock

@@ -6772,9 +6772,9 @@ rollup-pluginutils@^2.8.1:
   dependencies:
     estree-walker "^0.6.1"
 
-rollup@2.60.2:
-  version "2.60.2"
-  resolved "https://registry.npmjs.org/rollup/-/rollup-2.60.2.tgz"
+rollup@2.70.2:
+  version "2.70.2"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-2.70.2.tgz#808d206a8851628a065097b7ba2053bd83ba0c0d"
   optionalDependencies:
     fsevents "~2.3.2"