[gtksourceview] (14 commits) ...Merge branch 'js-updates' into 'master'

[Christian Hergert <chergert src gnome org>]

Summary of changes:

  b844776... javascript.lang (and family): Minor tweaks
  7b05241... javascript.lang: Fix highlighting for new.target spanning m
  566794d... javascript.lang: Add highlighting for import.meta
  780b587... javascript.lang: Add highlighting for String.prototype.repl
  8677453... typescript.lang: Add highlighting for type-only imports and
  a880ff8... javascript.lang: Add number-start and number-end regexes
  4ad9814... javascript.lang, typescript.lang: Centralize keyword regexe
  7f07ce6... javascript.lang, typescript.lang: Better specify object lit
  24a6db8... typescript.lang: Fix non-null assertion operator matching i
  b4cab0a... typescript.lang: Add highlighting for private fields (stage
  9a2be9d... typescript.lang: Add highlighting for @ts-expect-error
  bf6c657... jsx.lang: Highlight invalid characters as errors
  1734423... typescript.lang: Update supported level
  c36d467... Merge branch 'js-updates' into 'master'