chore:(deps): bump @types/chart.js from 2.9.25 to 2.9.26 in /explorer (#12974)

Bumps [@types/chart.js](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/chart.js) from 2.9.25 to 2.9.26.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/chart.js)

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

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

explorer/package-lock.json

@@ -3240,9 +3240,9 @@
       "integrity": "sha512-o3SGYRlOpvLFpwJA6Sl1UPOwKFEvE4FxTEB/c9XHI2whdnd4kmPVkNLL8gY4vWGBxWWDumzLbKsAhEH5SKn37Q=="
     },
     "@types/chart.js": {
-      "version": "2.9.25",
-      "resolved": "https://registry.npmjs.org/@types/chart.js/-/chart.js-2.9.25.tgz",
-      "integrity": "sha512-SPgPISpaGM42WL9Dezms4+8fInHxAXDzTs8DwPxhGuJT+jETXlVITTbe8bvK1n+sMmyyelR9B4w0lwMkA24oJg==",
+      "version": "2.9.26",
+      "resolved": "https://registry.npmjs.org/@types/chart.js/-/chart.js-2.9.26.tgz",
+      "integrity": "sha512-X2I0sRdvRB3QKtC240cYQtQHxPX9c7IPOZ2TRF1VOs1wtGfRsC7/AEUFWxPtJgaWV0SS+zK/Qh8jDEvNfa3KxQ==",
       "requires": {
         "moment": "^2.10.2"
       }

explorer/package.json

@@ -12,7 +12,7 @@
     "@types/bn.js": "^4.11.6",
     "@types/bs58": "^4.0.1",
     "@types/chai": "^4.2.13",
-    "@types/chart.js": "^2.9.25",
+    "@types/chart.js": "^2.9.26",
     "@types/classnames": "^2.2.10",
     "@types/jest": "^26.0.14",
     "@types/node": "^14.11.8",