Update dependencies

Fixes a bunch of security audit warnings in the process.

package.json

@@ -39,12 +39,12 @@
     "ember-awesome-macros": "0.41.0",
     "ember-cli": "~3.18.0",
     "ember-cli-app-version": "^3.2.0",
-    "ember-cli-babel": "^7.19.0",
+    "ember-cli-babel": "^7.20.4",
     "ember-cli-chart": "^3.6.0",
     "ember-cli-dependency-checker": "^3.2.0",
-    "ember-cli-htmlbars": "^4.3.1",
+    "ember-cli-htmlbars": "^5.1.2",
     "ember-cli-inject-live-reload": "^2.0.2",
-    "ember-cli-moment-shim": "^3.7.1",
+    "ember-cli-moment-shim": "^3.8.0",
     "ember-cli-sass": "^10.0.1",
     "ember-cli-sri": "^2.1.1",
     "ember-cli-uglify": "^3.0.0",
@@ -55,15 +55,15 @@
     "ember-load-initializers": "^2.1.1",
     "ember-macro-helpers": "0.17.0",
     "ember-maybe-import-regenerator": "^0.1.6",
-    "ember-moment": "^7.8.1",
+    "ember-moment": "^8.0.0",
     "ember-promise-helpers": "^1.0.9",
     "ember-qunit": "^4.6.0",
     "ember-resolver": "^8.0.0",
     "ember-source": "~3.18.0",
-    "ember-template-lint": "^2.6.0",
+    "ember-template-lint": "^2.8.0",
     "ember-truth-helpers": "github:jmurphyau/ember-truth-helpers#31a14373a31f1f82c77537720549b47a95c28e5f",
-    "eslint": "^7.0.0",
-    "eslint-plugin-ember": "^8.4.0",
+    "eslint": "^7.1.0",
+    "eslint-plugin-ember": "^8.5.2",
     "eslint-plugin-node": "^11.1.0",
     "ethers": "^4.0.47",
     "kredits-contracts": "^5.5.0",
@@ -72,10 +72,10 @@
     "ndjson": "github:hugomrdias/ndjson#feat/readable-stream3",
     "npm-run-all": "^4.1.5",
     "qunit-dom": "^1.2.0",
-    "sass": "^1.26.5",
+    "sass": "^1.26.7",
     "transform-loader": "^0.2.4",
     "tv4": "^1.3.0",
-    "web3-utils": "^1.2.7"
+    "web3-utils": "^1.2.8"
   },
   "engines": {
     "node": "10.* || >= 12"