chore:(deps): bump @types/chart.js from 2.9.29 to 2.9.31 in /explorer (#15557)

Bumps [@types/chart.js](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/chart.js) from 2.9.29 to 2.9.31.
- [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

@@ -3041,9 +3041,9 @@
       "integrity": "sha512-rYff6FI+ZTKAPkJUoyz7Udq3GaoDZnxYDEvdEdFZASiA7PoErltHezDishqQiSDWrGxvxmplH304jyzQmjp0AQ=="
     },
     "@types/chart.js": {
-      "version": "2.9.29",
-      "resolved": "https://registry.npmjs.org/@types/chart.js/-/chart.js-2.9.29.tgz",
-      "integrity": "sha512-WOZMitUU3gHDM0oQsCsVivX+oDsIki93szcTmmUPBm39cCvAELBjokjSDVOoA3xiIEbb+jp17z/3S2tIqruwOQ==",
+      "version": "2.9.31",
+      "resolved": "https://registry.npmjs.org/@types/chart.js/-/chart.js-2.9.31.tgz",
+      "integrity": "sha512-hzS6phN/kx3jClk3iYqEHNnYIRSi4RZrIGJ8CDLjgatpHoftCezvC44uqB3o3OUm9ftU1m7sHG8+RLyPTlACrA==",
       "requires": {
         "moment": "^2.10.2"
       }

explorer/package.json

@@ -14,7 +14,7 @@
     "@types/bn.js": "^5.1.0",
     "@types/bs58": "^4.0.1",
     "@types/chai": "^4.2.15",
-    "@types/chart.js": "^2.9.29",
+    "@types/chart.js": "^2.9.31",
     "@types/classnames": "^2.2.11",
     "@types/jest": "^26.0.20",
     "@types/node": "^14.14.31",