Bump version 5.13.0 (#51)

Author: axunonb

Src/Directory.Build.props

@@ -8,8 +8,8 @@
         <Copyright>Copyright 2011-$(CurrentYear) axuno, MailMergeLib Project maintainers and contributers</Copyright>
         <RepositoryUrl>https://github.com/axuno/MailMergeLib.git</RepositoryUrl>
         <PublishRepositoryUrl>true</PublishRepositoryUrl>
-        <Version>5.12.3</Version>
-        <FileVersion>5.12.3</FileVersion>
+        <Version>5.13.0</Version>
+        <FileVersion>5.13.0</FileVersion>
         <AssemblyVersion>5.0.0.0</AssemblyVersion> <!--only update AssemblyVersion with major releases -->
         <LangVersion>latest</LangVersion>
         <EnableNETAnalyzers>true</EnableNETAnalyzers>

appveyor.yml

@@ -27,7 +27,7 @@ for:
       - ps: dotnet restore --verbosity quiet
       - ps: dotnet add .\MailMergeLib.Tests\MailMergeLib.Tests.csproj package AltCover
       - ps: |
-          $version = "5.12.3"
+          $version = "5.13.0"
           $versionFile = $version + "." + ${env:APPVEYOR_BUILD_NUMBER}
 
           if ($env:APPVEYOR_PULL_REQUEST_NUMBER) {
@@ -47,8 +47,7 @@ for:
         type: NuGetPackage
     deploy:
       - provider: NuGet
-        api_key:
-          secure: ts2TxfjYx538JH6FZCKCEmdqBrFVRbiws5A+Dol8KQ2N+f5L5UB3WorPKCA5eSKv
+        api_key: $(NUGET_API_KEY)
         on:
           branch: main
   -