bump: OS versions for CI (#2249)

Author: Borda

.github/workflows/ci-testing.yml

@@ -26,17 +26,17 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: ["ubuntu-22.04", "macOS-14", "windows-2022"]
+        os: ["ubuntu-22.04", "macOS-15", "windows-latest"]
         python-version: ["3.10"]
         requires: ["latest", "nightly"] # , 'oldest'
         suite: ["core", "ops", "grads"]
         include:
-          - { os: "ubuntu-22.04", python-version: "3.11", requires: "latest" }
-          - { os: "ubuntu-22.04", python-version: "3.12", requires: "latest" }
-          - { os: "ubuntu-22.04", python-version: "3.13", requires: "latest" }
+          - { os: "ubuntu-24.04", python-version: "3.11", requires: "latest" }
+          - { os: "ubuntu-24.04", python-version: "3.12", requires: "latest" }
+          - { os: "ubuntu-24.04", python-version: "3.13", requires: "latest" }
         exclude:
-          - { os: "windows-2022", suite: "ops" }
-          - { os: "windows-2022", suite: "grads" }
+          - { os: "windows-latest", suite: "ops" }
+          - { os: "windows-latest", suite: "grads" }
 
     # Timeout: https://stackoverflow.com/a/59076067/4521646
     timeout-minutes: 35