ci: fix spurious native_backend_tests.yml cancellations

.github/workflows/native_backend_tests.yml

@@ -2,21 +2,55 @@ name: native backend CI
 
 on:
   push:
-    paths-ignore:
+    paths:
-      - "**.md"
+      - '!**'
+      - 'vlib/v/gen/native/'
+      - 'cmd/tools/builders/**.v'
+      - 'vlib/builtin/**.v'
+      - 'vlib/v/ast/**.v'
+      - 'vlib/v/scanner/**.v'
+      - 'vlib/v/scanner/**.v'
+      - 'vlib/v/parser/**.v'
+      - 'vlib/v/checker/**.v'
+      - 'vlib/v/gen/c/**.v'
+      - 'vlib/v/builder/**.v'
+      - 'vlib/v/cflag/**.v'
+      - 'vlib/v/live/**.v'
+      - 'vlib/v/util/**.v'
+      - 'vlib/v/markused/**.v'
+      - 'vlib/v/preludes/**.v'
+      - 'vlib/v/gen/native/**.v'
+      - 'vlib/v/gen/native/tests/**.v'
   pull_request:
     paths-ignore:
-      - "**.md"
+      - '!**'
-
+      - 'vlib/v/gen/native/'
-concurrency:
+      - 'cmd/tools/builders/**.v'
-  group: native-backend-ci-${{ github.event.pull_request.number || github.sha }}
+      - 'vlib/builtin/**.v'
-  cancel-in-progress: true
+      - 'vlib/v/ast/**.v'
+      - 'vlib/v/scanner/**.v'
+      - 'vlib/v/scanner/**.v'
+      - 'vlib/v/parser/**.v'
+      - 'vlib/v/checker/**.v'
+      - 'vlib/v/gen/c/**.v'
+      - 'vlib/v/builder/**.v'
+      - 'vlib/v/cflag/**.v'
+      - 'vlib/v/live/**.v'
+      - 'vlib/v/util/**.v'
+      - 'vlib/v/markused/**.v'
+      - 'vlib/v/preludes/**.v'
+      - 'vlib/v/gen/native/**.v'
+      - 'vlib/v/gen/native/tests/**.v'
 
 jobs:
   native-backend:
     strategy:
       matrix:
-        os: [ubuntu-18.04, ubuntu-20.04, macos-10.15, macos-11, macos-12, windows-2016, windows-2019, windows-2022]
+        os: [
+          ubuntu-18.04, ubuntu-20.04,
+          macos-10.15, macos-11, macos-12,
+          windows-2019, windows-2022
+        ]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v2