Don't bother pinning OS images for Github Actions

Fix #1612 The hassle of updating these pins (both for us and our users, most copy our documentation) seems to outweigh the benefit of the pin. The truth is that they're not really pins anyway, Github update them all the time, and they don't work for historical repeatability because old images are retired all the time.
pypa · Jan 27, 2024 · 3bf1908 · 3bf1908
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commit 3bf1908
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Showing 8 changed files with 10 additions and 10 deletions.
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
@@ -38,10 +38,10 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04, windows-latest, macos-11]
+        os: [ubuntu-latest, windows-latest, macos-latest]
         python_version: ['3.12']
         include:
-        - os: ubuntu-22.04
+        - os: ubuntu-latest
           python_version: '3.8'
     timeout-minutes: 180
     steps:

diff --git a/.github/workflows/update-dependencies.yml b/.github/workflows/update-dependencies.yml
@@ -18,7 +18,7 @@ jobs:
   update-dependencies:
     name: Update dependencies
     if: github.repository_owner == 'pypa' || github.event_name != 'schedule'
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
 

diff --git a/README.md b/README.md
@@ -88,7 +88,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04, windows-2019, macOS-11]
+        os: [ubuntu-latest, windows-latest, macOS-latest]
 
     steps:
       - uses: actions/checkout@v4

diff --git a/docs/setup.md b/docs/setup.md
@@ -178,7 +178,7 @@ To build Linux, Mac, and Windows wheels using GitHub Actions, create a `.github/
         runs-on: ${{ matrix.os }}
         strategy:
           matrix:
-            os: [ubuntu-20.04, windows-2019, macos-11]
+            os: [ubuntu-latest, windows-latest, macos-latest]
 
         steps:
           - uses: actions/checkout@v4
@@ -211,7 +211,7 @@ To build Linux, Mac, and Windows wheels using GitHub Actions, create a `.github/
         runs-on: ${{ matrix.os }}
         strategy:
           matrix:
-            os: [ubuntu-20.04, windows-2019, macos-11]
+            os: [ubuntu-latest, windows-latest, macos-latest]
 
         steps:
           - uses: actions/checkout@v4

diff --git a/examples/github-apple-silicon.yml b/examples/github-apple-silicon.yml
@@ -5,7 +5,7 @@ on: [push, pull_request]
 jobs:
   build_wheels_macos:
     name: Build wheels on macos-11
-    runs-on: macos-11
+    runs-on: macos-latest
     steps:
       - uses: actions/checkout@v4
 

diff --git a/examples/github-deploy.yml b/examples/github-deploy.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-22.04, windows-2022, macos-11]
+        os: [ubuntu-latest, windows-latest, macos-latest]
 
     steps:
       - uses: actions/checkout@v4

diff --git a/examples/github-minimal.yml b/examples/github-minimal.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04, windows-2019, macos-11]
+        os: [ubuntu-latest, windows-latest, macos-latest]
 
     steps:
       - uses: actions/checkout@v4

diff --git a/examples/github-with-qemu.yml b/examples/github-with-qemu.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04, windows-2019, macos-11]
+        os: [ubuntu-latest, windows-latest, macos-latest]
 
     steps:
       - uses: actions/checkout@v4