chore: upgrade dependencies

Author: fudiwei

src/SKIT.FlurlHttpClient.Wechat.Ads/SKIT.FlurlHttpClient.Wechat.Ads.csproj

@@ -36,7 +36,7 @@
 	</ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="SKIT.FlurlHttpClient.Common" Version="3.1.0" />
+        <PackageReference Include="SKIT.FlurlHttpClient.Common" Version="3.1.1" />
     </ItemGroup>
 
 </Project>

src/SKIT.FlurlHttpClient.Wechat.OpenAI/SKIT.FlurlHttpClient.Wechat.OpenAI.csproj

@@ -36,7 +36,7 @@
 	</ItemGroup>
 
     <ItemGroup>
-		<PackageReference Include="SKIT.FlurlHttpClient.Common" Version="3.1.0" />
+		<PackageReference Include="SKIT.FlurlHttpClient.Common" Version="3.1.1" />
 	</ItemGroup>
 
 </Project>