Bump System.Threading.Tasks.Extensions in the system group

Bumps the system group with 1 update: [System.Threading.Tasks.Extensions](https://github.com/dotnet/maintenance-packages).


Updates `System.Threading.Tasks.Extensions` from 4.5.4 to 4.6.3
- [Release notes](https://github.com/dotnet/maintenance-packages/releases)
- [Commits](https://github.com/dotnet/maintenance-packages/commits)

---
updated-dependencies:
- dependency-name: System.Threading.Tasks.Extensions
  dependency-version: 4.6.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: system
...

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

Author: dependabot[bot]

src/ThisAssembly.Constants/ThisAssembly.Constants.csproj

@@ -53,7 +53,7 @@ C#:
 
     <PackageReference Include="Scriban" Version="6.2.1" Pack="false" IncludeAssets="build" />
     <PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
-    <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.4" />
+    <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.6.3" />
 
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.0.1" Pack="false" />
     <PackageReference Include="PolySharp" Version="1.15.0" PrivateAssets="All" />

src/ThisAssembly.Resources/ThisAssembly.Resources.csproj

@@ -28,7 +28,7 @@
 
     <PackageReference Include="Scriban" Version="6.2.1" Pack="false" IncludeAssets="build" />
     <PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
-    <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.4" />
+    <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.6.3" />
 
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.0.1" Pack="false" />
     <PackageReference Include="PolySharp" Version="1.15.0" PrivateAssets="All" />

src/ThisAssembly.Strings/ThisAssembly.Strings.csproj

@@ -33,7 +33,7 @@ such as "Hello {name}".
 
     <PackageReference Include="Scriban" Version="6.2.1" Pack="false" IncludeAssets="build" />
     <PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
-    <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.4" />
+    <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.6.3" />
 
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.0.1" Pack="false" />
     <PackageReference Include="PolySharp" Version="1.15.0" PrivateAssets="All" />