ci-windows-installed.yml: Revert to windows-latest

https://github.com/microsoft/vcpkg/issues/52468 is fixed.

Set the revision parameter of johnwason/vcpkg-action to commit
a900048467b8199f82c31411e0f1597c267fdada, which is our workaround for
the Visual Studio 2026 MSVC bug.

.github/actions/setup-windows/action.yml

diff --git a/.github/actions/setup-windows/action.yml b/.github/actions/setup-windows/action.yml
index a68b08b..d18f124 100644
--- a/.github/actions/setup-windows/action.yml
+++ b/.github/actions/setup-windows/action.yml
@@ -84,6 +84,10 @@
         triplet: x64-windows-release
         token: ${{ github.token }}
         cache-key: ${{ hashFiles('cmake/Modules/*', 'ext/*.cmd', 'ext/*.sh') }}
+        # [svt-av1] Work around Visual Studio 2026 MSVC bug (#52469)
+        # TODO(wtc): Remove this after a vcpkg release newer than 2026.06.01 is
+        # published at https://github.com/microsoft/vcpkg/tags.
+        revision: 'a900048467b8199f82c31411e0f1597c267fdada'
 
     - name: Install nasm
       if: ${{ inputs.codec-aom == 'LOCAL' || inputs.codec-avm == 'LOCAL' || inputs.codec-dav1d == 'LOCAL' || inputs.codec-svt == 'LOCAL' }}

.github/workflows/ci-windows-installed.yml

diff --git a/.github/workflows/ci-windows-installed.yml b/.github/workflows/ci-windows-installed.yml
index ee4a2b8..41df5e0 100644
--- a/.github/workflows/ci-windows-installed.yml
+++ b/.github/workflows/ci-windows-installed.yml
@@ -16,9 +16,7 @@
 
 jobs:
   build-windows-installed:
-    # Use windows-2022 instead of windows-latest until
-    # https://github.com/microsoft/vcpkg/issues/52468 is fixed.
-    runs-on: windows-2022
+    runs-on: windows-latest
     strategy:
       fail-fast: false
       matrix: