change(Actions): cancel outdated builds

Signed-off-by: Octol1ttle <l1ttleofficial@outlook.com>

.github/workflows/build.yml

@@ -1,5 +1,9 @@
 name: Build
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 on:
   push:
     branches:

.github/workflows/codeql.yml

@@ -1,5 +1,9 @@
 name: "CodeQL Code Scanning"
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 on:
   push:
     branches:

.github/workflows/flatpak.yml

@@ -1,5 +1,9 @@
 name: Flatpak
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 on:
   push:
     branches:

.github/workflows/nix.yml

@@ -1,5 +1,9 @@
 name: Nix
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 on:
   push:
     branches: