ci: Print the current LLVM version in x86_64-gnu-llvm-19

Author: dianqk

src/ci/docker/host-x86_64/x86_64-gnu-llvm-19/Dockerfile

@@ -33,6 +33,9 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   libmpc-dev \
   && rm -rf /var/lib/apt/lists/*
 
+# Print the current LLVM version
+RUN opt --version
+
 # Install powershell (universal package) so we can test x.ps1 on Linux
 # FIXME: need a "universal" version that supports libicu74, but for now it still works to ignore that dep.
 RUN curl -sL "https://github.com/PowerShell/PowerShell/releases/download/v7.3.1/powershell_7.3.1-1.deb_amd64.deb" > powershell.deb && \