Bump Microsoft.Azure.Functions.Worker from 1.19.0 to 1.20.0 (#57)

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Author: dependabot[bot]

sample/SampleFunctionApp/SampleFunctionApp.csproj

@@ -8,7 +8,7 @@
     <IsPackable>false</IsPackable>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.Azure.Functions.Worker" Version="1.19.0" />
+    <PackageReference Include="Microsoft.Azure.Functions.Worker" Version="1.20.0" />
     <PackageReference Include="Microsoft.Azure.Functions.Worker.Extensions.Http" Version="3.1.0" />
     <PackageReference Include="Microsoft.Azure.Functions.Worker.Extensions.OpenApi" Version="1.5.1" />
     <PackageReference Include="Microsoft.Azure.Functions.Worker.Sdk" Version="1.16.4" />