Update Snappier dependency of MongoDB.Driver to 1.3.1 (#941)

Author: pmachapman

src/DataAccess/src/SIL.DataAccess/SIL.DataAccess.csproj

@@ -22,6 +22,8 @@
 		<PackageReference Include="Newtonsoft.Json" Version="13.0.4" />
 		<PackageReference Include="Nito.AsyncEx" Version="5.1.2" />
 		<PackageReference Include="SIL.Core" Version="17.0.0" />
+		<!-- Vulnerable dependency of MongoDB.Driver - see https://github.com/advisories/GHSA-pggp-6c3x-2xmx -->
+		<PackageReference Include="Snappier" Version="1.3.1" />
 	</ItemGroup>
 
 	<ItemGroup>