Bump Microsoft.SourceLink.GitHub from 10.0.203 to 10.0.300 (#433)

---
updated-dependencies:
- dependency-name: Microsoft.SourceLink.GitHub
  dependency-version: 10.0.300
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

src/Microsoft.IO.RecyclableMemoryStream.csproj

@@ -43,7 +43,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="10.0.203" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="10.0.300" PrivateAssets="All" />
     <PackageReference Include="System.Memory" Version="4.6.3" Condition="'$(TargetFramework)' == 'netstandard2.0'" />
   </ItemGroup>