bump Smdn.MSBuild.ProjectAssets.Library up to 1.7.5

Author: smdn

src/ProjectAssets.props

@@ -5,7 +5,7 @@ SPDX-License-Identifier: MIT
 <Project>
   <PropertyGroup>
     <SmdnProjectAssets_Common_PackageVersion Condition=" '$(SmdnProjectAssets_Common_PackageVersion)' == '' ">1.4.1</SmdnProjectAssets_Common_PackageVersion>
-    <SmdnProjectAssets_Library_PackageVersion Condition=" '$(SmdnProjectAssets_Library_PackageVersion)' == '' ">1.7.4</SmdnProjectAssets_Library_PackageVersion>
+    <SmdnProjectAssets_Library_PackageVersion Condition=" '$(SmdnProjectAssets_Library_PackageVersion)' == '' ">1.7.5</SmdnProjectAssets_Library_PackageVersion>
   </PropertyGroup>
 
   <!--