Update .NET 10 and 11 images with PowerShell v7.6.0-rc.1#7048

lbussell merged 2 commits intodotnet:nightlydotnet/dotnet-docker:nightlyfrom

SeeminglyScience:update-pwsh-v7.6.0-rc.1SeeminglyScience/dotnet-docker:update-pwsh-v7.6.0-rc.1Copy head branch name to clipboard