EPPlus 9: centralize versioning, embed sub-project DLLs, drop net35 - #2451

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-dotnet@v4, github/codeql-action/analyze@v3, github/codeql-action/init@v3. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

The variable 'positioned' is assigned but its value is never used

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

The field 'FontsBinaryReader._numberOfReadBytes' is assigned but its value is never used

The result of the expression is always 'false' since a value of type 'int' is never equal to 'null' of type 'int?'

The variable 'positioned' is assigned but its value is never used

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

The field 'FontsBinaryReader._numberOfReadBytes' is assigned but its value is never used

The result of the expression is always 'false' since a value of type 'int' is never equal to 'null' of type 'int?'

The variable 'positioned' is assigned but its value is never used

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

Cannot build an overlay database because build-mode is set to "undefined" instead of "none". Falling back to creating a normal full database instead.