ci: cancel previous runs on PR update (#3748)

Co-authored-by: Felanbird <41973452+Felanbird@users.noreply.github.com>

.github/workflows/build.yml

@@ -7,6 +7,10 @@ on:
       - master
   pull_request:
 
+concurrency: 
+  group: build-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build:
     runs-on: ${{ matrix.os }}

.github/workflows/check-formatting.yml

@@ -7,6 +7,10 @@ on:
       - master
   pull_request:
 
+concurrency: 
+  group: check-formatting-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   check:
     runs-on: ubuntu-20.04

.github/workflows/lint.yml

@@ -7,6 +7,10 @@ on:
       - master
   pull_request:
 
+concurrency: 
+  group: lint-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   lint:
     runs-on: ubuntu-latest

.github/workflows/push-aur.yml

@@ -7,6 +7,10 @@ on:
       - master
   pull_request:
 
+concurrency: 
+  group: build-archlinux-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build:
     runs-on: ubuntu-latest

.github/workflows/test.yml

@@ -7,6 +7,10 @@ on:
 env:
   TWITCH_PUBSUB_SERVER_IMAGE: ghcr.io/chatterino/twitch-pubsub-server-test:v1.0.3
 
+concurrency: 
+  group: test-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   test:
     runs-on: ${{ matrix.os }}