Cancel current CI actions when a PR is updated

.github/workflows/android.yml

@@ -3,7 +3,7 @@ name: Build (Android)
 on: [push, pull_request]
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.run_id }}
+  group: ${{ github.workflow }}-${{ github.event.issue.number || github.run_id }}
   cancel-in-progress: true
 
 jobs:

.github/workflows/emscripten.yml

@@ -3,7 +3,7 @@ name: Build (Emscripten)
 on: [push, pull_request]
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.run_id }}
+  group: ${{ github.workflow }}-${{ github.event.issue.number || github.run_id }}
   cancel-in-progress: true
 
 jobs:

.github/workflows/ios.yml

@@ -3,7 +3,7 @@ name: Build (iOS/tvOS)
 on: [push, pull_request]
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.run_id }}
+  group: ${{ github.workflow }}-${{ github.event.issue.number || github.run_id }}
   cancel-in-progress: true
 
 jobs:

.github/workflows/main.yml

@@ -3,7 +3,7 @@ name: Build
 on: [push, pull_request]
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.run_id }}
+  group: ${{ github.workflow }}-${{ github.event.issue.number || github.run_id }}
   cancel-in-progress: true
 
 jobs:

.github/workflows/msvc.yml

@@ -3,7 +3,7 @@ name: Build (MSVC)
 on: [push, pull_request]
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.run_id }}
+  group: ${{ github.workflow }}-${{ github.event.issue.number || github.run_id }}
   cancel-in-progress: true
 
 jobs:

.github/workflows/n3ds.yml

@@ -3,7 +3,7 @@ name: Build (Nintendo 3DS)
 on: [push, pull_request]
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.run_id }}
+  group: ${{ github.workflow }}-${{ github.event.issue.number || github.run_id }}
   cancel-in-progress: true
 
 jobs:

.github/workflows/riscos.yml

@@ -3,7 +3,7 @@ name: Build (RISC OS)
 on: [push, pull_request]
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.run_id }}
+  group: ${{ github.workflow }}-${{ github.event.issue.number || github.run_id }}
   cancel-in-progress: true
 
 jobs:

.github/workflows/vmactions.yml

@@ -3,7 +3,7 @@ name: Build (VM Actions)
 on: [push, pull_request]
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.run_id }}
+  group: ${{ github.workflow }}-${{ github.event.issue.number || github.run_id }}
   cancel-in-progress: true
 
 jobs: