Bump lodash from 4.17.14 to 4.17.19 in /webapp (#67)

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.14 to 4.17.19.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.14...4.17.19)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>