chore:(deps): bump @solana/web3.js from 0.66.3 to 0.68.0 in /explorer (#11574)

Bumps [@solana/web3.js](https://github.com/solana-labs/solana-web3.js) from 0.66.3 to 0.68.0.
- [Release notes](https://github.com/solana-labs/solana-web3.js/releases)
- [Commits](https://github.com/solana-labs/solana-web3.js/compare/v0.66.3...v0.68.0)

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

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

explorer/package-lock.json

@@ -2334,9 +2334,9 @@
       "integrity": "sha512-zLtOIToct1EBTbwldkMJsXC2eCsmWOOP7z6UG0M/sCgnPExtIjvVMCpPESvPnMbQzDZytXVy0nvMbUuK2gZs2A=="
     },
     "@solana/web3.js": {
-      "version": "0.66.3",
-      "resolved": "https://registry.npmjs.org/@solana/web3.js/-/web3.js-0.66.3.tgz",
-      "integrity": "sha512-HYM1z9E6qVZKEHoLAn5tvL4SioruNB/mvNQhW2v7Va1WbhFArMIEh24SPC23LuEFZVe3PKwlT47zzUhdyua8tQ==",
+      "version": "0.68.0",
+      "resolved": "https://registry.npmjs.org/@solana/web3.js/-/web3.js-0.68.0.tgz",
+      "integrity": "sha512-UkzLgBVHztUHzYnXlYdSp6Lc/NJi4B3qBPc/MV6lBbr9d6WISwrfUb1YmkLBEcnvmkXITZwePSgfoRkdIC3CoA==",
       "requires": {
         "@babel/runtime": "^7.3.1",
         "bn.js": "^5.0.0",

explorer/package.json

@@ -4,7 +4,7 @@
   "private": true,
   "dependencies": {
     "@react-hook/debounce": "^3.0.0",
-    "@solana/web3.js": "^0.66.3",
+    "@solana/web3.js": "^0.68.0",
     "@testing-library/jest-dom": "^5.11.2",
     "@testing-library/react": "^10.4.8",
     "@testing-library/user-event": "^12.1.1",