npm audit fix & npm update (#70)

* npm audit fix & modify eslint rules

* update axios, @types/jest, eslint-plugin-jest

* update @octokit/rest, @typescript-eslint/parser

* update @actions/github

package.json

@@ -26,26 +26,26 @@
   "author": "Naoki Oketani <okepy.naoki@gmail.com>",
   "license": "MIT",
   "dependencies": {
-    "@actions/core": "^1.2.4",
-    "@actions/github": "^2.2.0",
-    "@octokit/rest": "^17.9.2",
-    "axios": "^0.19.2",
+    "@actions/core": "^1.2.5",
+    "@actions/github": "^4.0.0",
+    "@octokit/rest": "^18.0.5",
+    "axios": "^0.20.0",
     "strip-ansi": "^6.0.0"
   },
   "devDependencies": {
-    "@types/jest": "^25.2.3",
-    "@types/node": "^14.0.5",
-    "@typescript-eslint/parser": "^3.0.0",
+    "@types/jest": "^26.0.13",
+    "@types/node": "^14.10.0",
+    "@typescript-eslint/parser": "^4.1.0",
     "@zeit/ncc": "^0.22.3",
-    "eslint": "^7.1.0",
-    "eslint-plugin-github": "^3.4.1",
-    "eslint-plugin-jest": "^23.13.1",
-    "graphql": "^15.0.0",
-    "jest": "^26.0.1",
-    "jest-circus": "^26.0.1",
+    "eslint": "^7.8.1",
+    "eslint-plugin-github": "^4.1.1",
+    "eslint-plugin-jest": "^24.0.0",
+    "graphql": "^15.3.0",
+    "jest": "^26.4.2",
+    "jest-circus": "^26.4.2",
     "js-yaml": "^3.14.0",
-    "prettier": "^2.0.5",
-    "ts-jest": "^26.0.0",
-    "typescript": "^3.9.3"
+    "prettier": "^2.1.1",
+    "ts-jest": "^26.3.0",
+    "typescript": "^3.9.7"
   }
 }