Bump actions/setup-dotnet from 5 to 6 - #112

Possible null reference argument for parameter 'name' in 'GitHubReleaseAsset.GitHubReleaseAsset(string name, string url)'.

Possible null reference argument for parameter 'dllDownloadUrl' in 'PluginVersionCache.PluginVersionCache(string version, uint releaseId, DateTime publishmentTime, DateTime lastRefreshed, string dllDownloadUrl, string? dependenciesDownloadUrl)'.

Possible null reference argument for parameter 'version' in 'PluginVersionCache.PluginVersionCache(string version, uint releaseId, DateTime publishmentTime, DateTime lastRefreshed, string dllDownloadUrl, string? dependenciesDownloadUrl)'.

Possible null reference argument for parameter 'repository' in 'PluginAlias.PluginAlias(string repository, byte flags)'.

Possible null reference argument for parameter 'pluginAliases' in 'DataJson.DataJson(string? gitHubPersonalAccessToken, DateTime? eulaAccepted, bool pluginManagerWarningDismissed, DateTime? lastPluginAliasesRefresh, Dictionary<string, PluginVersionCache> pluginVersionCache, Dictionary<string, PluginAlias> pluginAliases)'.

Possible null reference argument for parameter 'pluginVersionCache' in 'DataJson.DataJson(string? gitHubPersonalAccessToken, DateTime? eulaAccepted, bool pluginManagerWarningDismissed, DateTime? lastPluginAliasesRefresh, Dictionary<string, PluginVersionCache> pluginVersionCache, Dictionary<string, PluginAlias> pluginAliases)'.

Possible null reference return.

Possible null reference argument for parameter 'assets' in 'GitHubRelease.GitHubRelease(string? message, uint id, string? tag_name, DateTime published_at, List<GitHubReleaseAsset> assets)'.

Possible null reference return.