release/protocol/3.18.1

Changes:

• #1796: Make TextDocumentContentFeature a supported capability
• #1795: textDocumentContent capability/feature is still behind a proposed gate even though in 3.18 it's not flagged as proposed anymore
• #1794: Fix partial result type for textDocument/diagnostic request
• #1792: Update @vscode/test-electron to version 3.0.0
• #1791: Refine notification assertions in delayOpenNotifications tests
• #1790: Update inline value documentation and clean up dependencies
• #1788: Update dependency versions in lock files
• #1787: Merge 3.18 release into main
• #1786: Shorten test dir path

This list of changes was auto generated.