Bump vaadin-bom from 10.0.16 to 10.0.19 in /servlet-vaadin-v10

Bumps vaadin-bom from 10.0.16 to 10.0.19.

---
updated-dependencies:
- dependency-name: com.vaadin:vaadin-bom
  dependency-type: direct:production
...

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