Removes unnecessary manual resolutions

* Many of these resolutions brought in libraries that were no longer in
  the dependency tree. Those could be removed without any changes.
* Upgrades `geckodriver` from v1.21.0 to v3.0.1.
  * No breaking changes: [CHANGELOG](https://github.com/vladikoff/node-geckodriver/tree/v3.0.1#changelog)
* Upgrades `load-grunt-config` from v3.0.1 to v4.0.1.
  * No breaking changes: [CHANGELOG](https://github.com/firstandthird/load-grunt-config/blob/4.0.1/CHANGELOG.md)
* Bumps `ejs` from v3.1.5 to v3.1.6 and
  `@types/ejs` from v3.0.4 to v3.1.0.

Partially addresses opensearch-project#1298

Signed-off-by: Tommy Markley <markleyt@amazon.com>

package.json

@@ -74,25 +74,14 @@
   },
   "resolutions": {
     "**/@types/node": "^14.17.32",
-    "**/@types/react": "^16.14.23",
-    "**/ejs": "^3.1.6",
     "**/front-matter": "^4.0.2",
     "**/glob-parent": "^6.0.0",
     "**/hoist-non-react-statics": "^3.3.2",
-    "**/immer": "^9.0.6",
     "**/kind-of": ">=6.0.3",
-    "**/lodash": "^4.17.21",
     "**/merge": "^2.1.1",
     "**/minimist": "^1.2.5",
     "**/node-jose": "^2.1.0",
-    "**/normalize-url": "^4.5.1",
-    "**/prismjs": "^1.23.0",
-    "**/react-syntax-highlighter": "^15.3.1",
-    "**/react-syntax-highlighter/**/highlight.js": "^10.4.1",
-    "**/ssri": "^6.0.2",
-    "**/tar": "^6.1.11",
     "**/trim": "^0.0.3",
-    "**/trim-newlines": "^3.0.1",
     "**/typescript": "4.0.2"
   },
   "workspaces": {
@@ -375,7 +364,7 @@
     "exit-hook": "^2.2.0",
     "fetch-mock": "^7.3.9",
     "fp-ts": "^2.3.1",
-    "geckodriver": "^1.21.0",
+    "geckodriver": "^3.0.1",
     "getopts": "^2.2.5",
     "grunt": "^1.4.1",
     "grunt-available-tasks": "^0.6.3",
@@ -405,7 +394,7 @@
     "less": "^4.1.2",
     "license-checker": "^16.0.0",
     "listr": "^0.14.1",
-    "load-grunt-config": "^3.0.1",
+    "load-grunt-config": "^4.0.1",
     "load-json-file": "^6.2.0",
     "markdown-it": "^12.3.2",
     "mocha": "^7.2.0",

packages/osd-plugin-generator/package.json

@@ -10,7 +10,7 @@
   },
   "dependencies": {
     "@osd/dev-utils": "1.0.0",
-    "ejs": "^3.1.5",
+    "ejs": "^3.1.6",
     "execa": "^4.0.2",
     "inquirer": "^7.3.3",
     "normalize-path": "^3.0.0",
@@ -19,7 +19,7 @@
     "vinyl-fs": "^3.0.3"
   },
   "devDependencies": {
-    "@types/ejs": "^3.0.4",
+    "@types/ejs": "^3.1.0",
     "@types/prettier": "^2.0.2",
     "@types/inquirer": "^7.3.1"
   }