Bump Pubnub in /src/Examples/PubnubApi.ConsoleExample

Bumps [Pubnub](https://github.com/pubnub/c-sharp) from 6.18.0 to 6.19.0.
- [Release notes](https://github.com/pubnub/c-sharp/releases)
- [Changelog](https://github.com/pubnub/c-sharp/blob/master/CHANGELOG)
- [Commits](v6.18.0.0...v6.19.0.0)

---
updated-dependencies:
- dependency-name: Pubnub
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

src/Examples/PubnubApi.ConsoleExample/PubnubApi.ConsoleExample.csproj

@@ -48,8 +48,9 @@
     <Reference Include="Numbers, Version=1.8.2.0, Culture=neutral, PublicKeyToken=9cd62db60ea5554c, processorArchitecture=MSIL">
       <HintPath>..\..\packages\PeterO.Numbers.1.8.2\lib\net40\Numbers.dll</HintPath>
     </Reference>
-    <Reference Include="Pubnub, Version=6.18.0.0, Culture=neutral, PublicKeyToken=dc66f52ce6619f44, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Pubnub.6.18.0\lib\net48\Pubnub.dll</HintPath>
+    <Reference Include="Pubnub, Version=6.19.0.0, Culture=neutral, PublicKeyToken=dc66f52ce6619f44">
+      <HintPath>..\..\packages\Pubnub.6.19.0\lib\net48\Pubnub.dll</HintPath>
+      <Private>True</Private>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.ComponentModel.Composition" />

src/Examples/PubnubApi.ConsoleExample/packages.config

@@ -4,7 +4,7 @@
   <package id="PeterO.Cbor" version="4.5.2" targetFramework="net461" />
   <package id="PeterO.Numbers" version="1.8.2" targetFramework="net461" />
   <package id="PeterO.URIUtility" version="1.0.0" targetFramework="net461" />
-  <package id="Pubnub" version="6.18.0" targetFramework="net48" />
+  <package id="Pubnub" version="6.19.0" targetFramework="net48" />
   <package id="System.Collections" version="4.0.11" targetFramework="net461" />
   <package id="System.Collections.Concurrent" version="4.3.0" targetFramework="net48" />
   <package id="System.Diagnostics.Debug" version="4.0.11" targetFramework="net461" />