EE from net45 to net452 (4.5 is not supported anymore by Microsoft)

Author: codingseb

CodingSeb.ExpressionEvaluator/CodingSeb.ExpressionEvaluator.csproj

@@ -14,7 +14,7 @@
     <PackageLicenseUrl></PackageLicenseUrl>
     <PackageProjectUrl>https://github.com/codingseb/ExpressionEvaluator</PackageProjectUrl>
     <PackageTags>expression-evaluator evaluation math expression evaluate parser mathematical-expressions-evaluator mathematical-expressions script scripting evaluator csharp-script eval execute executescript evaluate-expressions expression-parser fluid calculations formula netcore netstandard net45 interpreter</PackageTags>
-    <TargetFrameworks>net45;net5.0;net6.0;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>net452;net5.0;net6.0;netstandard2.0</TargetFrameworks>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <PackageIconUrl>https://github.com/codingseb/ExpressionEvaluator/blob/master/Icon.png?raw=true</PackageIconUrl>
     <PackageIcon>Icon.png</PackageIcon>