Chore: 0.1.21

# [0.1.21](v0.1.20...v0.1.21) (2023-02-24)

## Update
* More usage of metadata library
* More usage of metadata library

src/MetadataMigrator/MetadataMigrator.csproj

@@ -5,7 +5,7 @@
     <TargetFramework>net6.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
-  <Version>0.1.20</Version></PropertyGroup>
+  <Version>0.1.21</Version></PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="Coscine.Database" Version="2.*-*" />