Update dependency Microsoft.CodeAnalysis.NetAnalyzers to v8 (#446)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

src/Cake.AzureDevOps/Cake.AzureDevOps.csproj

@@ -36,7 +36,7 @@
   <ItemGroup>
     <PackageReference Include="Cake.Common" Version="3.0.0" PrivateAssets="All" />
     <PackageReference Include="Cake.Core" Version="3.0.0" PrivateAssets="All" />
-    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="7.0.4">
+    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="8.0.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>