chore:(deps): bump cross-fetch from 3.1.1 to 3.1.2 in /explorer (#16054)

Bumps [cross-fetch](https://github.com/lquixada/cross-fetch) from 3.1.1 to 3.1.2.
- [Release notes](https://github.com/lquixada/cross-fetch/releases)
- [Commits](https://github.com/lquixada/cross-fetch/compare/v3.1.1...v3.1.2)

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

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

explorer/package-lock.json

@@ -5809,9 +5809,9 @@
       }
     },
     "cross-fetch": {
-      "version": "3.1.1",
-      "resolved": "https://registry.npmjs.org/cross-fetch/-/cross-fetch-3.1.1.tgz",
-      "integrity": "sha512-eIF+IHQpRzoGd/0zPrwQmHwDC90mdvjk+hcbYhKoaRrEk4GEIDqdjs/MljmdPPoHTQudbmWS+f0hZsEpFaEvWw==",
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/cross-fetch/-/cross-fetch-3.1.2.tgz",
+      "integrity": "sha512-+JhD65rDNqLbGmB3Gzs3HrEKC0aQnD+XA3SY6RjgkF88jV2q5cTc5+CwxlS3sdmLk98gpPt5CF9XRnPdlxZe6w==",
       "requires": {
         "node-fetch": "2.6.1"
       }

explorer/package.json

@@ -31,7 +31,7 @@
     "chart.js": "^2.9.4",
     "classnames": "2.2.6",
     "coingecko-api": "^1.0.10",
-    "cross-fetch": "^3.1.1",
+    "cross-fetch": "^3.1.2",
     "humanize-duration-ts": "^2.1.1",
     "node-sass": "^4.14.1",
     "prettier": "^2.2.1",