Can't reproduce gcc14 failure seen on CRAN

[krlmlr]

CRAN: https://www.r-project.org/nosvn/R.check/r-devel-linux-x86_64-debian-gcc/duckdb-00check.html, https://www.r-project.org/nosvn/R.check/r-devel-linux-x86_64-debian-gcc/duckdb-00install.html

rhub: https://github.com/duckdb/duckdb-r/actions/runs/11339432242/job/31534225436#step:6:134

I suspect we need -Wall -pedantic, this was necessary in a local Ubuntu + gcc14 container.

Also, gcc is now at 14.2.0 . How to make sure we get the latest and greatest in this Docker image?

[gaborcsardi]

PRs are welcome! :) For the gcc version I suspect that we'd need to update the distro, but I doubt that the gcc minor version is super important.