v0.21.5

• FSharpLint.Console: add --version fsprojects#612 fsprojects#611 [@Thorium]
• gitignore: add the BenchmarkDotNet artifacts folder fsprojects#619 [@Numpsy]
• CI: remove redundant .NET install fsprojects#624 [@knocte]
• Add new rule AvoidSinglePipeOperator fsprojects#595 [@tehraninasab]
• AvoidTooShortNames: fix false negative (generic type names) fsprojects#622 [@Mersho]
• Remove recursive dependency fsprojects#569 [@knocte]
• Conventions/Naming: refactoring fsprojects#571 [@webwarrior-ws]