⬆️ Bump Polyfill from 9.7.3 to 9.7.6

---
updated-dependencies:
- dependency-name: Polyfill
  dependency-version: 9.7.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -14,7 +14,7 @@
     <PackageVersion Include="Draco.Lsp" Version="0.4.14-pre" />
     <PackageVersion Include="Microsoft.Bcl.AsyncInterfaces" Version="10.0.2" />
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="5.0.0" />
-    <PackageVersion Include="Polyfill" Version="9.7.3" />
+    <PackageVersion Include="Polyfill" Version="9.7.6" />
     <PackageVersion Include="Sharprompt" Version="3.0.1" />
     <PackageVersion Include="ShellProgressBar" Version="5.2.0" />
     <PackageVersion Include="SixLabors.ImageSharp" Version="3.1.12" />