also switch for touchstone

Author: lorenzwalthert

.github/workflows/touchstone-comment.yaml

@@ -1,5 +1,9 @@
 name: Continuous Benchmarks (Comment)
 
+concurrency:
+  group: ${{ github.action }}-${{ github.event_path }}
+  cancel-in-progress: true
+
 # read-write repo token
 # access to secrets
 on:

.github/workflows/touchstone-receive.yaml

@@ -1,4 +1,8 @@
 name: Continuous Benchmarks (Receive)
+concurrency:
+  group: ${{ github.action }}-${{ github.event_path }}
+  cancel-in-progress: true
+
 on: pull_request
 jobs:
   prepare: