Update changelog release date

Remove canary requirement for CodeQL Methods Usage panel

Merge pull request github#3054 from github/v1.9.4

v1.9.4

v1.9.3 (github#3022)

Merge pull request github#2956 from github/v1.9.2

Release v1.9.2

Merge pull request github#2891 from github/koesie10/dispose-webview

Dispose tracked objects when panel is disposed

Merge pull request github#2828 from github/v1.9.0

Release v1.9.0