[CI] Add a workflow to update the homebrew macs.

Author: hageboeck

.github/workflows/update-brew-macs.yml

@@ -0,0 +1,77 @@
+name: 'Update Homebrew Macs'
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - 'master'
+    paths:
+      - '.github/workflow/update-brew-macs.yml'
+
+  #TODO: Remove the below
+  pull_request:
+    branches:
+      - 'master'
+
+jobs:
+  update-macos:
+    if: github.repository_owner == 'root-project'
+
+    permissions:
+      contents: read
+
+    # Use login shells to have brew and java available
+    defaults:
+      run:
+        shell: bash -leo pipefail {0}
+
+    env:
+      VENV_DIR: ${{ github.workspace }}/ROOT_CI_VENV
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - runner-label: experimental-brew-ci
+          - runner-label: experimental-brew-ci-2
+
+    runs-on:
+      - 'self-hosted'
+      - ${{ matrix.runner-label }}
+
+    name: Update homebrew and Python
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ inputs.ref_name }}
+          path: src/
+
+      - name: Update brew packages
+        run: |
+            brew update
+            brew install ccache googletest openjdk pyenv [email protected]
+            echo "Installing official brew deps: $(brew deps --direct --include-build root)"
+            brew install $(brew deps --direct --include-build root)
+
+      - name: Display software versions
+        run: |
+            java --version
+            cmake --version
+            which python3
+            python3 --version
+
+      - name: Recreate Python venv
+        run: |
+          rm -rf ${VENV_DIR}
+          $(brew --prefix [email protected])/bin/python3.12 -m venv ${VENV_DIR}
+          source ${VENV_DIR}/bin/activate
+          pip3 install --upgrade pip
+          cat ${{ github.workspace }}/src/requirements.txt | while read PACKAGE; do
+            if [ -n "${PACKAGE%%#*}" ]; then
+              PACKAGE="${PACKAGE%%#*}"
+              pip3 --no-cache-dir install -U "${PACKAGE}" || echo "::error file=update-brew-macs.yml::Could not install package ${PACKAGE}"
+            fi
+          done
+