specify semver ranges for dependencies

package.json

@@ -25,33 +25,33 @@
   "license": "Apache-2.0",
   "homepage": "https://github.com/postmanlabs/code-generators",
   "dependencies": {
-    "lodash": "4.17.21",
-    "async": "3.2.2",
-    "path": "0.12.7",
-    "postman-collection": "4.0.0",
-    "shelljs": "0.8.5"
+    "lodash": "^4.17.21",
+    "async": "^3.2.2",
+    "path": "^0.12.7",
+    "postman-collection": "^4.0.0",
+    "shelljs": "^0.8.5"
   },
   "devDependencies": {
-    "browserify": "14.5.0",
-    "chai": "4.3.7",
-    "chalk": "2.4.2",
-    "eslint": "5.16.0",
-    "dependency-check": "3.0.0",
-    "editorconfig": "0.15.3",
-    "eslint-plugin-jsdoc": "3.15.1",
-    "eslint-plugin-lodash": "2.7.0",
-    "eslint-plugin-mocha": "4.12.1",
-    "eslint-plugin-security": "1.5.0",
-    "istanbul": "0.4.5",
-    "js-yaml": "3.14.1",
-    "newman": "5.3.2",
-    "jsdoc": "3.6.10",
-    "mocha": "6.2.3",
-    "nyc": "14.1.1",
-    "parse-gitignore": "1.0.1",
-    "pretty-ms": "3.2.0",
-    "recursive-readdir": "2.2.3",
-    "watchify": "3.11.1"
+    "browserify": "^14.5.0",
+    "chai": "^4.3.7",
+    "chalk": "^2.4.2",
+    "eslint": "^5.16.0",
+    "dependency-check": "^3.0.0",
+    "editorconfig": "^0.15.3",
+    "eslint-plugin-jsdoc": "^3.15.1",
+    "eslint-plugin-lodash": "^2.7.0",
+    "eslint-plugin-mocha": "^4.12.1",
+    "eslint-plugin-security": "^1.5.0",
+    "istanbul": "^0.4.5",
+    "js-yaml": "^3.14.1",
+    "newman": "^5.3.2",
+    "jsdoc": "^3.6.10",
+    "mocha": "^6.2.3",
+    "nyc": "^14.1.1",
+    "parse-gitignore": "^1.0.1",
+    "pretty-ms": "^3.2.0",
+    "recursive-readdir": "^2.2.3",
+    "watchify": "^3.11.1"
   },
   "engines": {
     "node": ">=12"