Update dependency modules

Author: kazuhitoyokoi

package.json

@@ -42,31 +42,31 @@
     "web of things"
   ],
   "dependencies": {
-    "ajv": "6.12.0",
-    "api-spec-converter": "2.11.0",
-    "axios": "0.20.0",
+    "ajv": "6.12.6",
+    "api-spec-converter": "2.12.0",
+    "axios": "0.21.1",
     "colors": "1.4.0",
-    "csv-string": "3.1.8",
-    "javascript-obfuscator": "0.28.1",
-    "jimp": "0.9.6",
+    "csv-string": "4.0.1",
+    "javascript-obfuscator": "1.12.1",
+    "jimp": "0.16.1",
     "js-string-escape": "1.0.1",
     "minimist": "1.2.5",
-    "mustache": "4.0.1",
+    "mustache": "4.1.0",
     "swagger-js-codegen-formdata": "0.15.5",
     "yamljs": "0.3.0"
   },
   "devDependencies": {
-    "del": "5.1.0",
-    "grunt": "1.0.4",
+    "del": "6.0.0",
+    "grunt": "1.3.0",
     "grunt-shell": "3.0.1",
     "grunt-simple-mocha": "0.4.1",
-    "istanbul": "0.4.5",
-    "node-red": "1.0.4",
-    "node-red-node-test-helper": "0.2.3",
+    "nyc": "15.1.0",
+    "node-red": "1.2.9",
+    "node-red-node-test-helper": "0.2.7",
     "q": "1.5.1",
     "should": "13.2.3",
-    "sinon": "9.0.1",
-    "supertest": "4.0.2"
+    "sinon": "10.0.0",
+    "supertest": "6.1.3"
   },
   "bin": {
     "node-red-nodegen": "bin/node-red-nodegen.js"