Update pallet weights every week

[ggwpez]

With changes to FRAME, the Rust compiler version, pallets and the benchmarker itself, we should try to update the pallet weights on a weekly basis to see regressions early and not just before a release.

Task: Update the weights of all pallets from all runtimes every week. It should re-use the already open MR and force-push there, to avoid spamming up new MRs if reviews are slow.

[bkchr]

Task: Update the weights of all pallets from all runtimes every week. It should re-use the already open MR and force-push there, to avoid spamming up new MRs if reviews are slow.

No no. These prs should be merged automatically if the weight changes are not a regression. Generally I would also expect if these kind of prs exist they should also get merged. No need to bring this stuff up and then it lays around.