ci: build multiple Python versions in parallel

Our build system supports this now. So update CI to make use of
the feature.

On Linux, 3.13 freethreaded builds are still their own CI job. We
may need to tweak `build-main.py` to allow intelligently selecting
freethreaded compatible versions. We could potentially also allow
building freethreaded in parallel with non-freethreaded. This can be
done as a followup.

Author: indygreg

.github/workflows/apple.yml

@@ -2,7 +2,7 @@ name: MacOS Python build
 
 on:
   push:
-    branches: [main]
+    branches: [ main ]
   pull_request:
 
 concurrency:
@@ -47,7 +47,7 @@ jobs:
         build:
           - target_triple: 'aarch64-apple-darwin'
             runner: macos-14
-            py: 'cpython-3.9'
+            py: 'all'
             options: 'debug'
           - target_triple: 'aarch64-apple-darwin'
             runner: macos-14
@@ -58,10 +58,6 @@ jobs:
             py: 'cpython-3.9'
             options: 'pgo+lto'
 
-          - target_triple: 'aarch64-apple-darwin'
-            runner: macos-14
-            py: 'cpython-3.10'
-            options: 'debug'
           - target_triple: 'aarch64-apple-darwin'
             runner: macos-14
             py: 'cpython-3.10'
@@ -71,10 +67,6 @@ jobs:
             py: 'cpython-3.10'
             options: 'pgo+lto'
 
-          - target_triple: 'aarch64-apple-darwin'
-            runner: macos-14
-            py: 'cpython-3.11'
-            options: 'debug'
           - target_triple: 'aarch64-apple-darwin'
             runner: macos-14
             py: 'cpython-3.11'
@@ -84,10 +76,6 @@ jobs:
             py: 'cpython-3.11'
             options: 'pgo+lto'
 
-          - target_triple: 'aarch64-apple-darwin'
-            runner: macos-14
-            py: 'cpython-3.12'
-            options: 'debug'
           - target_triple: 'aarch64-apple-darwin'
             runner: macos-14
             py: 'cpython-3.12'
@@ -97,10 +85,6 @@ jobs:
             py: 'cpython-3.12'
             options: 'pgo+lto'
 
-          - target_triple: 'aarch64-apple-darwin'
-            runner: macos-14
-            py: 'cpython-3.13'
-            options: 'debug'
           - target_triple: 'aarch64-apple-darwin'
             runner: macos-14
             py: 'cpython-3.13'
@@ -128,7 +112,7 @@ jobs:
           # or LTO builds.
           - target_triple: 'x86_64-apple-darwin'
             runner: macos-13
-            py: 'cpython-3.9'
+            py: 'all'
             options: 'debug'
           - target_triple: 'x86_64-apple-darwin'
             runner: macos-13
@@ -139,10 +123,6 @@ jobs:
             py: 'cpython-3.9'
             options: 'pgo+lto'
 
-          - target_triple: 'x86_64-apple-darwin'
-            runner: macos-13
-            py: 'cpython-3.10'
-            options: 'debug'
           - target_triple: 'x86_64-apple-darwin'
             runner: macos-13
             py: 'cpython-3.10'
@@ -152,10 +132,6 @@ jobs:
             py: 'cpython-3.10'
             options: 'pgo+lto'
 
-          - target_triple: 'x86_64-apple-darwin'
-            runner: macos-13
-            py: 'cpython-3.11'
-            options: 'debug'
           - target_triple: 'x86_64-apple-darwin'
             runner: macos-13
             py: 'cpython-3.11'
@@ -165,10 +141,6 @@ jobs:
             py: 'cpython-3.11'
             options: 'pgo+lto'
 
-          - target_triple: 'x86_64-apple-darwin'
-            runner: macos-13
-            py: 'cpython-3.12'
-            options: 'debug'
           - target_triple: 'x86_64-apple-darwin'
             runner: macos-13
             py: 'cpython-3.12'
@@ -178,10 +150,6 @@ jobs:
             py: 'cpython-3.12'
             options: 'pgo+lto'
 
-          - target_triple: 'x86_64-apple-darwin'
-            runner: macos-13
-            py: 'cpython-3.13'
-            options: 'debug'
           - target_triple: 'x86_64-apple-darwin'
             runner: macos-13
             py: 'cpython-3.13'