Bump IDisposableAnalyzers from 2.1.1 to 2.1.2 in /src/XmlAbstraction (#32)

Bumps [IDisposableAnalyzers](https://github.com/DotNetAnalyzers/IDisposableAnalyzers) from 2.1.1 to 2.1.2.
- [Release notes](https://github.com/DotNetAnalyzers/IDisposableAnalyzers/releases)
- [Changelog](https://github.com/DotNetAnalyzers/IDisposableAnalyzers/blob/master/RELEASE_NOTES.md)
- [Commits](DotNetAnalyzers/IDisposableAnalyzers@2.1.1...2.1.2)

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

Author: dependabot[bot]

src/XmlAbstraction/src/XmlAbstraction.csproj

@@ -61,7 +61,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
-    <PackageReference Include="IDisposableAnalyzers" Version="2.1.1">
+    <PackageReference Include="IDisposableAnalyzers" Version="2.1.2">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>