fixup! release: add installer validation

Apparently the macos-latest-xl-arm64 pool either does not exist anymore
or is somehow broken. I just waited over 4h for a job to be started.
Seeing as `macos-latest` is now ARM-based, let's see whether we can just
use that pool instead.

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

.github/workflows/build-git-installers.yml

@@ -720,7 +720,7 @@ jobs:
           - os: ubuntu-latest
             artifact: linux-artifacts
             command: git
-          - os: macos-latest-xl-arm64
+          - os: macos-latest
             artifact: macos-artifacts
             command: git
           - os: macos-latest