Bump jquery from 3.4.0 to 3.5.0 in /landingpage

Bumps [jquery](https://github.com/jquery/jquery) from 3.4.0 to 3.5.0.
- [Release notes](https://github.com/jquery/jquery/releases)
- [Commits](jquery/jquery@3.4.0...3.5.0)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

landingpage/package-lock.json

@@ -27,7 +27,7 @@
     },
     "dependencies": {
         "bootstrap": "4.3.1",
-        "jquery": "3.4.0",
+        "jquery": "3.5.0",
         "jquery.easing": "^1.4.1"
     },
     "devDependencies": {