CI: set pipefail Linux build action.

.github/workflows/actions/linux/build/action.yml

@@ -48,6 +48,7 @@ runs:
       id: build
       shell: bash -l {0}
       run: |
+        set -o pipefail
         (stdbuf -oL -eL cmake --build ${{ inputs.builddir }} -j$(nproc) ${{ inputs.extraParameters }}) \
         2> >(tee -a ${{ inputs.errorFile }}) | tee -a ${{ inputs.logFile }}
     - name: Write report