chore: bump feature version to 1.4.0 (#1984)

Update VSCode (v.1.97.0) extensions

Release notes: https://github.com/microsoft/vscode/releases/tag/1.97.0

Release notes for 1.3.9

Release notes for 1.3.8

Release notes for 1.3.7

Update maven plugins

Require o.e.lsp4e 0.18.9

For critical fix for typescript ls
eclipse-lsp4e/lsp4e#1008

Do not alter already signed jar

Fixes #1505

Release notes for 1.3.3

Release notes for 1.3.2