Add concurrency groups to the slow CI actions (#2807)

This will cancel any running actions when new commits are pushed to a PR
branch.

.github/workflows/c-linter.yml

@@ -2,6 +2,10 @@ name: cpp-linter
 
 on: [pull_request]
 
+concurrency:
+  group: ${{ github.ref }}-${{ github.head_ref }}-${{ github.workflow }}
+  cancel-in-progress: true
+
 jobs:
   cpp-linter:
     runs-on: ubuntu-latest

.github/workflows/clang-tidy.yml

@@ -1,6 +1,11 @@
 name: "clang-tidy"
 
 on: [pull_request]
+
+concurrency:
+  group: ${{ github.ref }}-${{ github.head_ref }}-${{ github.workflow }}
+  cancel-in-progress: true
+
 jobs:
   clang_tidy:
     runs-on: ubuntu-latest

.github/workflows/compiler-warnings.yml

@@ -1,6 +1,11 @@
 name: "compiler warnings"
 
 on: [pull_request]
+
+concurrency:
+  group: ${{ github.ref }}-${{ github.head_ref }}-${{ github.workflow }}
+  cancel-in-progress: true
+
 jobs:
   compiler_warnings:
     runs-on: ubuntu-latest

.github/workflows/detonation-sdc-compare.yml

@@ -1,6 +1,11 @@
 name: detonation-sdc
 
 on: [pull_request]
+
+concurrency:
+  group: ${{ github.ref }}-${{ github.head_ref }}-${{ github.workflow }}
+  cancel-in-progress: true
+
 jobs:
   detonation-sdc:
     runs-on: ubuntu-latest

.github/workflows/flame_wave-compare.yml

@@ -1,6 +1,11 @@
 name: flame_wave
 
 on: [pull_request]
+
+concurrency:
+  group: ${{ github.ref }}-${{ github.head_ref }}-${{ github.workflow }}
+  cancel-in-progress: true
+
 jobs:
   flame_wave-2d:
     runs-on: ubuntu-latest

.github/workflows/gpu_action.yml

@@ -1,6 +1,11 @@
 name: GPU compilation
 
 on: [pull_request]
+
+concurrency:
+  group: ${{ github.ref }}-${{ github.head_ref }}-${{ github.workflow }}
+  cancel-in-progress: true
+
 jobs:
   gpu-compilation:
     runs-on: ubuntu-latest

.github/workflows/wdmerger_collision-compare.yml

@@ -1,6 +1,11 @@
 name: wdmerger_collision
 
 on: [pull_request]
+
+concurrency:
+  group: ${{ github.ref }}-${{ github.head_ref }}-${{ github.workflow }}
+  cancel-in-progress: true
+
 jobs:
   wdmerger_collision-2d:
     runs-on: ubuntu-latest