[Security] Bump vaadin.version from 8.1.6 to 20.0.1#115

dependabot-preview[bot] wants to merge 1 commit intomastersaturnism/grpc-by-example-java:masterfrom

dependabot/maven/vaadin.version-20.0.1saturnism/grpc-by-example-java:dependabot/maven/vaadin.version-20.0.1Copy head branch name to clipboard