Reduce number of x86_64-linux bindists to 1

Now that #11628 has landed, is there a reason we build a huge matrix of `x86_64-linux` bindists? https://github.com/haskell/cabal/blob/a51c4ee1556d816ad86e90db7e6330dd51b0b6e7/.github/workflows/reusable-release.yml#L74-L151 Could we build just one, static bindist? This one: https://github.com/haskell/cabal/blob/a51c4ee1556d816ad86e90db7e6330dd51b0b6e7/.github/workflows/reusable-release.yml#L137-L143 ---- Same question for `aarch64-linux`. Surely just one Alpine static bindist should suffice there?