CI: be explicit re windows image version

Let's control when to update things.
At the moment latest still points to 2022.

Author: lazka

.github/workflows/main.yml

@@ -11,7 +11,7 @@ on:
 
 jobs:
   build-x86:
-    runs-on: windows-latest
+    runs-on: windows-2022
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
@@ -36,7 +36,7 @@ jobs:
           path: prefix-cairo-32/
 
   build-x64:
-    runs-on: windows-latest
+    runs-on: windows-2022
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
@@ -61,7 +61,7 @@ jobs:
           path: prefix-cairo-64/
 
   build-arm64:
-    runs-on: windows-latest
+    runs-on: windows-2022
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
@@ -89,7 +89,7 @@ jobs:
           path: prefix-cairo-arm64/
 
   build-pkgconf:
-    runs-on: windows-latest
+    runs-on: windows-2022
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
@@ -117,7 +117,7 @@ jobs:
   release:
     permissions:
       contents: write
-    runs-on: windows-latest
+    runs-on: windows-2022
     needs: [build-x86, build-x64, build-arm64, build-pkgconf]
     if: github.event_name == 'release'
     steps: