build(deps): bump Azure.Security.KeyVault.Certificates from 4.6.0 to 4.7.0 in /Notation.Plugin.AzureKeyVault (#207)

Author: dependabot[bot]

Notation.Plugin.AzureKeyVault/Notation.Plugin.AzureKeyVault.csproj

@@ -18,7 +18,7 @@
 
   <ItemGroup>
     <PackageReference Include="Azure.Identity" Version="1.13.1" />
-    <PackageReference Include="Azure.Security.KeyVault.Certificates" Version="4.6.0" />
+    <PackageReference Include="Azure.Security.KeyVault.Certificates" Version="4.7.0" />
     <PackageReference Include="Azure.Security.KeyVault.Keys" Version="4.7.0" />
     <PackageReference Include="Azure.Security.KeyVault.Secrets" Version="4.7.0" />
     <PackageReference Include="System.Security.Cryptography.Pkcs" Version="8.0.0" />