🤖 Bump Google.Protobuf from 3.15.0 to 3.15.2 (#3113)

Bumps [Google.Protobuf](https://github.com/protocolbuffers/protobuf) from 3.15.0 to 3.15.2.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/master/generate_changelog.py)
- [Commits](https://github.com/protocolbuffers/protobuf/compare/v3.15.0...v3.15.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Shadowsocks.Protobuf/Shadowsocks.Protobuf.csproj

@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Google.Protobuf" Version="3.15.0" />
+    <PackageReference Include="Google.Protobuf" Version="3.15.2" />
   </ItemGroup>
 
 </Project>

shadowsocks-csharp/packages.config

@@ -6,7 +6,7 @@
   <package id="Costura.Fody" version="3.3.3" targetFramework="net472" />
   <package id="Fody" version="4.2.1" targetFramework="net472" developmentDependency="true" />
   <package id="GlobalHotKey" version="1.1.0" targetFramework="net472" />
-  <package id="Google.Protobuf" version="3.15.0" targetFramework="net472" />
+  <package id="Google.Protobuf" version="3.15.2" targetFramework="net472" />
   <package id="NaCl.Core" version="1.2.0" targetFramework="net472" />
   <package id="Newtonsoft.Json" version="12.0.2" targetFramework="net472" />
   <package id="NLog" version="4.6.8" targetFramework="net472" />

shadowsocks-csharp/shadowsocks-csharp.csproj

@@ -36,7 +36,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <PackageReference Include="GlobalHotKeyCore" Version="1.2.0" />
-    <PackageReference Include="Google.Protobuf" Version="3.15.0" />
+    <PackageReference Include="Google.Protobuf" Version="3.15.2" />
     <PackageReference Include="MdXaml" Version="1.6.0" />
     <PackageReference Include="Microsoft.VisualBasic" Version="10.3.0" />
     <PackageReference Include="NaCl.Core" Version="1.2.0" />