Whitelist the windows-2025 runner for actionlint (#5232)

Author: benjirewis

.github/actionlint.yml

@@ -17,3 +17,7 @@ self-hosted-runner:
     - buildjet-16vcpu-ubuntu-2204-arm
     - buildjet-32vcpu-ubuntu-2204-arm
     - buildjet-pinned-location_de_arm
+    # Include windows-2025 as a "self-hosted" runner because our actionlint version is so
+    # old, that it's unaware this runner label exists. See
+    # https://viam.atlassian.net/browse/RSDK-11699.
+    - windows-2025