DevEnv: update frontend dependencies - npm, nodemon, typescript (#22145)

* DevEnv: updates npm 6.13.4 -> 6.13.7

* DevEnv: updates nodemon 1.18.10 -> 2.0.2

* DevEnv: updates typescript 3.7.2 -> 3.7.5

* DevEnv: removes npm from dev dependencies

* DevEnv: updates typescript 3.7.2 -> 3.7.5 in grafana-data package

* DevEnv: updates typescript 3.7.2 -> 3.7.5 in grafana-e2e package

* DevEnv: updates typescript 3.7.2 -> 3.7.5 in grafana-toolkit package

* DevEnv: updates typescript 3.7.2 -> 3.7.5 in grafana-ui package

* DevEnv: updates typescript 3.7.2 -> 3.7.5 in grafana-runtime package

package.json

@@ -117,7 +117,6 @@
     "mutationobserver-shim": "0.3.3",
     "ngtemplate-loader": "2.0.1",
     "node-sass": "4.13.1",
-    "npm": "6.13.4",
     "optimize-css-assets-webpack-plugin": "5.0.3",
     "phantomjs-prebuilt": "2.1.16",
     "pixelmatch": "4.0.2",
@@ -141,7 +140,7 @@
     "ts-jest": "24.1.0",
     "ts-node": "8.6.2",
     "tslib": "1.10.0",
-    "typescript": "3.7.2",
+    "typescript": "3.7.5",
     "webpack": "4.41.5",
     "webpack-bundle-analyzer": "3.6.0",
     "webpack-cleanup-plugin": "0.5.1",
@@ -243,7 +242,7 @@
     "moment": "2.24.0",
     "mousetrap": "1.6.5",
     "mousetrap-global-bind": "1.1.0",
-    "nodemon": "1.18.10",
+    "nodemon": "2.0.2",
     "papaparse": "4.6.3",
     "prismjs": "1.19.0",
     "prop-types": "15.7.2",