ci: add janitor (#6292)

* add janitor

* add workflow ids

* add comment

.github/workflows/janitor.yml

@@ -0,0 +1,16 @@
+name: Janitor
+# Janitor cleans up previous runs of various workflows
+# To add more workflows to cancel visit https://api.github.com/repos/tendermint/tendermint/actions/workflows and find the actions name
+on:
+  pull_request:
+
+jobs:
+  cancel:
+    name: "Cancel Previous Runs"
+    runs-on: ubuntu-latest
+    timeout-minutes: 3
+    steps:
+      - uses: styfle/cancel-workflow-action@0.8.0
+        with:
+          workflow_id: 1041851,1401230,2837803
+          access_token: ${{ github.token }}

.github/workflows/tests.yml

@@ -10,14 +10,6 @@ on:
       - release/**
 
 jobs:
-  cleanup-runs:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: rokroskar/workflow-run-cleanup-action@master
-        env:
-          GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
-    if: "!startsWith(github.ref, 'refs/tags/') && github.ref != 'refs/heads/master'"
-
   build:
     name: Build
     runs-on: ubuntu-latest