Bump AmongUs.GameLibs.Steam from 2025.11.18 to 2026.3.31

---
updated-dependencies:
- dependency-name: AmongUs.GameLibs.Steam
  dependency-version: 2026.3.31
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

src/MalumMenu.csproj

@@ -15,7 +15,7 @@
 
     <ItemGroup>
         <PackageReference Include="BepInEx.Unity.IL2CPP" Version="6.0.0-be.735" Private="false" ExcludeAssets="runtime;native" />
-        <PackageReference Include="AmongUs.GameLibs.Steam" Version="2025.11.18" PrivateAssets="all" />
+        <PackageReference Include="AmongUs.GameLibs.Steam" Version="2026.3.31" PrivateAssets="all" />
 
         <PackageReference Include="BepInEx.AutoPlugin" Version="1.1.0" PrivateAssets="all" />
         <PackageReference Include="BepInEx.IL2CPP.MSBuild" Version="2.1.0-rc.1" PrivateAssets="all" ExcludeAssets="runtime" />