chore: add benchmark extras group (#50)

* chore: add benchmark extras group

* Update setup.py

* Update benchmark results [skip ci]

---------

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

Author: BobTheBuidler

.github/workflows/benchmark.yaml

@@ -46,7 +46,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install .[dev] pytest-codspeed pytest-benchmark
+          pip install .[benchmark]
           
       - name: Remove Python files from test env
         run: rm -r faster_hexbytes