Upgrade nuget packages, including PrettyPrompt · waf/CSharpRepl@eb7caa8

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@230611dbd0eb52da1e1f4f7bc8bb0c3a339fc8b7. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The `save-state` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

Do not use Assert.Equal() to check for collection size. Use Assert.Single instead.

Do not use Assert.Equal() to check for collection size. Use Assert.Single instead.

Do not use Assert.Equal() to check for collection size. Use Assert.Single instead.

Do not use Assert.Equal() to check for collection size. Use Assert.Single instead.

Do not use Assert.Equal() to check for collection size. Use Assert.Empty instead.

Do not use Assert.Equal() to check for collection size. Use Assert.Single instead.

Do not use Assert.Equal() to check for collection size. Use Assert.Single instead.

Do not use Assert.Equal() to check for collection size. Use Assert.Single instead.

Do not use Assert.Equal() to check for collection size. Use Assert.Single instead.

Do not use Assert.Equal() to check for collection size. Use Assert.Single instead.

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