hk: cleanup and refactoring with roslyn lsp · sergey-tihon/Clippit@1cfdad8

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The following actions use a deprecated Node.js version and will be forced to run on node20: actions/checkout@v2. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

Build and Test: Clippit/Comparer/WmlComparer.Private.Methods.Util.cs#L17

'IPackagePart' is obsolete: 'This is an experimental APIs and is subject to change' (https://aka.ms/openxmlsdk-diagnostics#OOXML0001)

Build and Test: Clippit/Comparer/WmlComparer.Private.Methods.Util.cs#L18

'IPackagePart' is obsolete: 'This is an experimental APIs and is subject to change' (https://aka.ms/openxmlsdk-diagnostics#OOXML0001)

Build and Test: Clippit/Excel/PegBase.cs#L559

Build and Test: Clippit/TestUtil.cs#L40

Build and Test: Clippit/Html/HtmlToWmlCssParser.cs#L4384

Build and Test: Clippit/Html/HtmlToWmlCssParser.cs#L4148

Build and Test: Clippit/Comparer/WmlComparer.Private.Methods.Util.cs#L17

'IPackagePart' is obsolete: 'This is an experimental APIs and is subject to change' (https://aka.ms/openxmlsdk-diagnostics#OOXML0001)

Build and Test: Clippit/Comparer/WmlComparer.Private.Methods.Util.cs#L18

'IPackagePart' is obsolete: 'This is an experimental APIs and is subject to change' (https://aka.ms/openxmlsdk-diagnostics#OOXML0001)

Build and Test: Clippit/Excel/PegBase.cs#L559

Build and Test: Clippit/TestUtil.cs#L40

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