Bump the microsoft group with 2 updates

Bumps Microsoft.NET.Test.Sdk from 18.5.1 to 18.6.0
Bumps Microsoft.SourceLink.GitHub from 10.0.203 to 10.0.300

---
updated-dependencies:
- dependency-name: Microsoft.NET.Test.Sdk
  dependency-version: 18.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: microsoft
- dependency-name: Microsoft.SourceLink.GitHub
  dependency-version: 10.0.300
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: microsoft
...

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

Author: dependabot[bot]

src/Sidio.Text.Base32.Tests/Sidio.Text.Base32.Tests.csproj

@@ -19,7 +19,7 @@
           <PrivateAssets>all</PrivateAssets>
           <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
         </PackageReference>
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.5.1" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.6.0" />
         <PackageReference Include="xunit" Version="2.9.3" />
         <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
           <PrivateAssets>all</PrivateAssets>

src/Sidio.Text.Base32/Sidio.Text.Base32.csproj

@@ -25,7 +25,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="Microsoft.SourceLink.GitHub" Version="10.0.203">
+      <PackageReference Include="Microsoft.SourceLink.GitHub" Version="10.0.300">
         <PrivateAssets>all</PrivateAssets>
         <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       </PackageReference>