[6.8] Dependency updates (#64936)

package.json

@@ -92,6 +92,10 @@
     "**/@types/node": "10.12.27",
     "@elastic/eui/lodash": "npm:@elastic/[email protected]",
     "**/cypress/lodash": "4.17.13",
+    "**/babel-plugin-inline-react-svg/svgo/js-yaml": "^3.13.1",
+    "**/grunt/js-yaml": "^3.13.1",
+    "**/load-grunt-config/js-yaml": "^3.13.1",
+    "**/serialize-javascript": "^2.1.1",
     "@types/react": "16.3.14"
   },
   "workspaces": {
@@ -168,16 +172,16 @@
     "globby": "^8.0.1",
     "good-squeeze": "2.1.0",
     "h2o2": "^8.1.2",
-    "handlebars": "4.5.3",
+    "handlebars": "4.7.6",
     "hapi": "^17.5.3",
     "hjson": "3.1.0",
     "hoek": "^5.0.4",
     "http-proxy-agent": "^2.1.0",
-    "https-proxy-agent": "^2.2.1",
+    "https-proxy-agent": "^5.0.0",
     "inert": "^5.1.0",
     "joi": "^13.5.2",
-    "jquery": "^3.3.1",
-    "js-yaml": "3.4.1",
+    "jquery": "^3.4.1",
+    "js-yaml": "3.13.1",
     "json-stringify-pretty-compact": "1.0.4",
     "json-stringify-safe": "5.0.1",
     "jstimezonedetect": "1.0.5",
@@ -190,7 +194,7 @@
     "less-loader": "4.1.0",
     "lodash": "npm:@elastic/[email protected]",
     "lru-cache": "4.1.1",
-    "markdown-it": "^8.4.1",
+    "markdown-it": "^10.0.0",
     "mini-css-extract-plugin": "0.4.4",
     "minimatch": "^3.0.4",
     "mkdirp": "0.5.1",
@@ -237,7 +241,7 @@
     "set-value": "^3.0.2",
     "stream-stream": "^1.2.6",
     "style-loader": "0.23.1",
-    "tar": "2.2.0",
+    "tar": "2.2.2",
     "terser-webpack-plugin": "^1.1.0",
     "thread-loader": "^2.1.2",
     "tinygradient": "0.3.0",
@@ -363,7 +367,7 @@
     "expect.js": "0.3.1",
     "faker": "1.1.0",
     "fetch-mock": "7.3.0",
-    "geckodriver": "^1.16.0",
+    "geckodriver": "^1.16.2",
     "getopts": "2.0.0",
     "grunt": "1.0.1",
     "grunt-cli": "^1.2.0",