Upgrade package references

Author: Rajesh Jinaga

src/Simpleflow/Simpleflow.csproj

@@ -3,7 +3,7 @@
     <TargetFrameworks>net48;netcoreapp3.1;net6.0;</TargetFrameworks>
     <PackageIcon>PackageIcon.png</PackageIcon>
     <VersionPrefix>1.0.11</VersionPrefix>
-    <VersionSuffix>beta1</VersionSuffix>
+    <VersionSuffix>beta2</VersionSuffix>
     <PackageReadmeFile>README.md</PackageReadmeFile>
   </PropertyGroup>
 
@@ -12,7 +12,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Antlr4.Runtime.Standard" Version="4.10.1" />
+    <PackageReference Include="Antlr4.Runtime.Standard" Version="4.11.1" />
     <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="6.0.1" />
   </ItemGroup>