chore:(deps): bump @solana/web3.js from 1.2.7 to 1.4.0 in /explorer (#16632)

Bumps [@solana/web3.js](https://github.com/solana-labs/solana-web3.js) from 1.2.7 to 1.4.0.
- [Release notes](https://github.com/solana-labs/solana-web3.js/releases)
- [Changelog](https://github.com/solana-labs/solana-web3.js/blob/master/.releaserc.json)
- [Commits](https://github.com/solana-labs/solana-web3.js/compare/v1.2.7...v1.4.0)

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

explorer/package-lock.json

@@ -2653,9 +2653,9 @@
       }
     },
     "@solana/web3.js": {
-      "version": "1.2.7",
-      "resolved": "https://registry.npmjs.org/@solana/web3.js/-/web3.js-1.2.7.tgz",
-      "integrity": "sha512-n0G+Mskqwj+lp15cUnlFEOKhD+85lkfoaz8aI/SIzvZBBPn6rU6JFybOF8JP3/jf3jnIr4ExK4sCG68i8On99A==",
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/@solana/web3.js/-/web3.js-1.4.0.tgz",
+      "integrity": "sha512-xSTvgzgOf9+XHe8E09inlTbrHSYHVQ4uQlcd9M+0hpyQ9uLOtEhUcNnegtIC3Hpz6OQ0awVJU29ppFkxhzM3aw==",
       "requires": {
         "@babel/runtime": "^7.12.5",
         "bn.js": "^5.0.0",

explorer/package.json

@@ -8,7 +8,7 @@
     "@react-hook/debounce": "^3.0.0",
     "@sentry/react": "^6.2.5",
     "@solana/spl-token-registry": "^0.2.57",
-    "@solana/web3.js": "^1.2.7",
+    "@solana/web3.js": "^1.4.0",
     "@testing-library/jest-dom": "^5.11.10",
     "@testing-library/react": "^11.2.6",
     "@testing-library/user-event": "^13.1.4",