[New bash version] 3 new items

[github-actions]

[New bash version] Bash-5.3 patch 3: remove internal quoting that causes failures when expanding nested array subscripts in an arithmetic context

https://cgit.git.savannah.gnu.org/cgit/bash.git/commit/?id=25c37d4804a9dbe0824ba805cc2b7cb94d243682

[New bash version] Bash-5.3 patch 2: do not try to use shm_open, there is too much variance in behavior across systems

https://cgit.git.savannah.gnu.org/cgit/bash.git/commit/?id=2ea3d6064911104d8e0437cb75b0e2559b0cd1b2

[New bash version] Bash-5.3 patch 1: fix posix-mode issue with "wait -n", where it can return process IDs outside the requested set

https://cgit.git.savannah.gnu.org/cgit/bash.git/commit/?id=21fee8ebcf03858a4c14b605095e89333ba159ba

[dscho]

Let's wait with upgrading to Bash v5.3, then...