docs(readme): update benchmarks

Author: KSXGitHub

README.md

@@ -14,11 +14,11 @@ Highly parallelized, blazing fast directory tree analyzer.
 
 ## Benchmark
 
-The benchmark was generated by [a GitHub Workflow](https://github.com/KSXGitHub/parallel-disk-usage/blob/0.12.0/.github/workflows/deploy.yaml#L431-L601) and uploaded to the release page.
+The benchmark was generated by [a GitHub Workflow](https://github.com/KSXGitHub/parallel-disk-usage/blob/0.20.0/.github/workflows/deploy.yaml#L431-L601) and uploaded to the release page.
 
 <details><summary>Programs</summary>
 
-* `pdu` v0.8.1
+* `pdu` v0.20.1
 * [`dust`](https://github.com/bootandy/dust) v1.2.1
 * [`dua`](https://github.com/Byron/dua-cli) v2.30.1
 * [`ncdu`](https://dev.yorhel.nl/ncdu)
@@ -28,14 +28,14 @@ The benchmark was generated by [a GitHub Workflow](https://github.com/KSXGitHub/
 </details>
 
 <figure>
- <img src="https://ksxgithub.github.io/parallel-disk-usage-0.12.0-benchmarks/tmp.benchmark-report.competing.block-size.svg">
+ <img src="https://ksxgithub.github.io/parallel-disk-usage-0.20.0-benchmarks/tmp.benchmark-report.competing.block-size.svg">
  <figcaption align="center">
  benchmark results
  <em>(lower is better)</em>
  </figcaption>
 </figure>
 
-[_(See more)_](https://github.com/KSXGitHub/parallel-disk-usage-0.12.0-benchmarks/blob/master/tmp.benchmark-report.CHARTS.md)
+[_(See more)_](https://github.com/KSXGitHub/parallel-disk-usage-0.20.0-benchmarks/blob/master/tmp.benchmark-report.CHARTS.md)
 
 ## Demo