[CI] Cancel old workflow runs (#1161)

* CI: Cancel old workflow runs

https://docs.github.com/en/actions/using-jobs/using-concurrency

* Update CHANGELOG.md

Author: Zeroto521

.github/workflows/code-checks.yml

@@ -2,6 +2,10 @@ name: Code style checks
 
 on: [push, pull_request]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   linting:
     runs-on: ubuntu-latest

.github/workflows/tests.yml

@@ -2,6 +2,10 @@ name: pyjanitor tests
 
 on: [pull_request]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   run-tests:
     strategy:

CHANGELOG.md

@@ -20,6 +20,7 @@
 -   [DOC] Add local documentation preview via github action artifact. PR #1149 @Zeroto521
 -   [ENH] Enable `encode_categorical` handle 2 (or more ) dimensions array. PR #1153 @Zeroto521
 -   [ENH] Faster computation for a single non-equi join, with a numba engine. Issue #1102 @samukweku
+-   [INF] Cancel old workflow runs via Github Action `concurrency`. PR #1161 @Zeroto521
 
 ## [v0.23.1] - 2022-05-03