Update workflows, templates, and instructions to mention new macOS Intel images (#709)

Author: agriyakhetarpal

docs/pages/guides/gha_wheels.md

@@ -116,7 +116,7 @@ build_wheels:
         - ubuntu-24.04-arm
         - windows-latest
         - windows-11-arm
-        - macos-13
+        - macos-15-intel
         - macos-latest
 
   steps:
@@ -143,13 +143,13 @@ because you followed the suggestions in the previous sections, and your package
 builds nicely into a wheel without strange customizations (if you _really_ need
 them, check out [`CIBW_BEFORE_BUILD`][] and [`CIBW_ENVIRONMENT`][]).
 
-This lists all three OS's including ARM variants; if you do not support Windows,
+This lists all three OSes including ARM variants; if you do not support Windows,
 you can remove that here. If you would rather make universal2 wheels for macOS,
-you can remove either the Intel (`macos-13`) or Apple Silicon (`macos-lateset`)
-job and set `CIBW_ARCHS_MACOS` to `"universal"`. You can also set
-`CIBW_TEST_SKIP` to `"*universal:arm64"` if building from Intel to acknowledge
-you understand that you can't test Apple Silicon from Intel. You can do this
-from the `pyproject.toml` file instead if you want.
+you can remove either the Intel (`macos-15-intel`) or Apple Silicon
+(`macos-latest`) job and set `CIBW_ARCHS_MACOS` to `"universal"`. You can also
+set `CIBW_TEST_SKIP` to `"*universal:arm64"` if building from Intel to
+acknowledge you understand that you can't test Apple Silicon from Intel. You can
+do this from the `pyproject.toml` file instead if you want.
 
 The build step is controlled almost exclusively through environment variables,
 which makes it easier (usually) to setup in CI. The main variable needed here is

{{cookiecutter.project_name}}/.github/workflows/{% if cookiecutter.__type=='compiled' %}cd.yml{% endif %}

@@ -46,7 +46,7 @@ jobs:
           - ubuntu-24.04-arm
           - windows-latest
           - windows-11-arm
-          - macos-13
+          - macos-15-intel
           - macos-latest
 
     steps: