Make the GHA workflows respect "skip_buildbots"

Author: alexreinking

.github/workflows/presubmit-clang-tidy.yml

@@ -19,6 +19,7 @@ permissions:
 
 jobs:
   check_clang_tidy:
+    if: ${{ !contains(github.event.pull_request.labels.*.name, 'skip_buildbots') }}
     name: Check clang-tidy
     runs-on: macos-latest
     steps:

.github/workflows/testing-arm-linux.yml

@@ -17,7 +17,6 @@ on:
       - "packaging/**"
       - "Makefile"
       - "Makefile.inc"
-  workflow_dispatch:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
@@ -28,6 +27,7 @@ permissions:
 
 jobs:
   arm-linux:
+    if: ${{ !contains(github.event.pull_request.labels.*.name, 'skip_buildbots') }}
     name: arm-${{ matrix.bits }} / ${{ matrix.uv_group }}
     runs-on: ubuntu-24.04-arm
     strategy:

.github/workflows/testing-linux.yml

@@ -17,7 +17,6 @@ on:
       - "packaging/**"
       - "Makefile"
       - "Makefile.inc"
-  workflow_dispatch:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
@@ -28,6 +27,7 @@ permissions:
 
 jobs:
   linux:
+    if: ${{ !contains(github.event.pull_request.labels.*.name, 'skip_buildbots') }}
     name: linux-${{ matrix.bits }} / ${{ matrix.uv_group }}
     runs-on: ubuntu-24.04
     strategy:

.github/workflows/testing-make.yml

@@ -44,6 +44,7 @@ permissions:
 
 jobs:
   build_make:
+    if: ${{ !contains(github.event.pull_request.labels.*.name, 'skip_buildbots') }}
     name: build on ${{ matrix.os }}
 
     strategy:

.github/workflows/testing-windows.yml

@@ -17,7 +17,6 @@ on:
       - "packaging/**"
       - "Makefile"
       - "Makefile.inc"
-  workflow_dispatch:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
@@ -32,6 +31,7 @@ defaults:
 
 jobs:
   windows:
+    if: ${{ !contains(github.event.pull_request.labels.*.name, 'skip_buildbots') }}
     name: windows-${{ matrix.bits }} / ${{ matrix.uv_group }}
     runs-on: windows-2022
     strategy: