update benchmark date

Author: boyter

README.md

@@ -663,7 +663,7 @@ Generally `scc` will the fastest code counter compared to any I am aware of and
 
 However if you want greater performance and you have RAM to spare you can disable the garbage collector like the following on linux `GOGC=-1 scc .` which should speed things up considerably. For some repositories turning off the code complexity calculation via `-c` can reduce runtime as well.
 
-Benchmarks are run on fresh 32 Core CPU Optimised Digital Ocean Virtual Machine 2021/02/25 all done using [hyperfine](https://github.com/sharkdp/hyperfine) with 3 warm-up runs and 10 timed runs.
+Benchmarks are run on fresh 32 Core CPU Optimised Digital Ocean Virtual Machine 2022/09/20 all done using [hyperfine](https://github.com/sharkdp/hyperfine) with 3 warm-up runs and 10 timed runs.
 
 ```
 scc v3.1.0