Bump lodash, @pnp/spfx-controls-react, @microsoft/sp-build-web, @microsoft/sp-webpart-workbench and gulp

Bumps [lodash](https://github.com/lodash/lodash) to 4.17.21 and updates ancestor dependencies [lodash](https://github.com/lodash/lodash), [@pnp/spfx-controls-react](https://github.com/pnp/sp-dev-fx-controls-react), [@microsoft/sp-build-web](http://aka.ms/spfx), [@microsoft/sp-webpart-workbench](http://aka.ms/spfx) and [gulp](https://github.com/gulpjs/gulp). These dependencies need to be updated together.


Updates `lodash` from 4.17.15 to 4.17.21
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](https://github.com/lodash/lodash/compare/4.17.15...4.17.21)

Updates `lodash` from 4.17.20 to 4.17.21
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](https://github.com/lodash/lodash/compare/4.17.15...4.17.21)

Updates `lodash` from 4.17.4 to 4.17.21
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](https://github.com/lodash/lodash/compare/4.17.15...4.17.21)

Updates `@pnp/spfx-controls-react` from 1.13.2 to 1.21.3
- [Release notes](https://github.com/pnp/sp-dev-fx-controls-react/releases)
- [Changelog](https://github.com/pnp/sp-dev-fx-controls-react/blob/v1.21.3/CHANGELOG.md)
- [Commits](https://github.com/pnp/sp-dev-fx-controls-react/compare/v1.13.2...v1.21.3)

Updates `@microsoft/sp-build-web` from 1.11.0 to 1.18.0

Updates `@microsoft/sp-webpart-workbench` from 1.11.0 to 1.12.1

Updates `gulp` from 3.9.1 to 4.0.2
- [Release notes](https://github.com/gulpjs/gulp/releases)
- [Changelog](https://github.com/gulpjs/gulp/blob/master/CHANGELOG.md)
- [Commits](https://github.com/gulpjs/gulp/compare/v3.9.1...v4.0.2)

---
updated-dependencies:
- dependency-name: lodash
  dependency-type: indirect
- dependency-name: lodash
  dependency-type: indirect
- dependency-name: lodash
  dependency-type: indirect
- dependency-name: "@pnp/spfx-controls-react"
  dependency-type: direct:production
- dependency-name: "@microsoft/sp-build-web"
  dependency-type: direct:development
- dependency-name: "@microsoft/sp-webpart-workbench"
  dependency-type: direct:development
- dependency-name: gulp
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

samples/react-mytasks/package.json

@@ -27,7 +27,7 @@
     "@pnp/odata": "^1.3.6",
     "@pnp/pnpjs": "^1.3.5",
     "@pnp/sp": "^1.3.6",
-    "@pnp/spfx-controls-react": "1.13.2",
+    "@pnp/spfx-controls-react": "1.21.3",
     "@pnp/spfx-property-controls": "1.15.0",
     "@types/jquery": "^3.3.30",
     "@uifabric/fluent-theme": "^0.16.21",
@@ -48,10 +48,10 @@
     "@microsoft/microsoft-graph-types": "^1.12.0",
     "@microsoft/rush-stack-compiler-2.9": "0.7.16",
     "@microsoft/rush-stack-compiler-3.3": "0.3.5",
-    "@microsoft/sp-build-web": "1.11.0",
+    "@microsoft/sp-build-web": "1.18.0",
     "@microsoft/sp-module-interfaces": "1.11.0",
     "@microsoft/sp-tslint-rules": "1.11.0",
-    "@microsoft/sp-webpart-workbench": "1.11.0",
+    "@microsoft/sp-webpart-workbench": "1.12.1",
     "@types/chai": "3.4.34",
     "@types/es6-promise": "0.0.33",
     "@types/mocha": "2.2.38",
@@ -60,7 +60,7 @@
     "@types/webpack-env": "1.13.1",
     "@voitanos/jest-preset-spfx-react16": "^1.3.2",
     "ajv": "~5.2.2",
-    "gulp": "~3.9.1",
+    "gulp": "~4.0.2",
     "gulp-sequence": "1.0.0",
     "gulp-stylelint": "^8.0.0",
     "jest": "^23.6.0",