Fix GitHub Actions macOS build (#6331)

The build is currently failing because it tries to download an older
version of the ccache package. This commit makes sure that Homebrew is
up-to-date before trying to install packages.

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8925b06d9caae7773563fa853700f6fa93aa406b..6d22f9f1166614c27411a1ba6bb8d22a3cb1a7de 100644 (file)
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -88,6 +88,7 @@ jobs:
     - name: Install Packages (macOS)
       if: runner.os == 'macOS'
       run: |
+        brew update
         brew install \
           ccache \
           cln \