Add --disable-download-timeout for MSYS2 pacman, fixups, v1.32.4 (#29)

* pacman - add --disable-download-timeout, v1.32.4

Co-authored-by: David Rodríguez <deivid.rodriguez@riseup.net>

* Fix OpenSSL install for Ruby head

* Don't install dlfcn package

* Fix Actions for Windows Head/OpenSSL, RG for 2.4 & 2.5

@actions/core to 1.10.0, v1.32.3 (#25)

@actions/core to 1.9.1, v1.32.2 (#24)

Allow '+' character in apt, brew, mingw, & mswin inputs, add CI (#22)

* Allow '+' character in apt, brew, mingw, & mswin inputs

* [CI] add Ubuntu & macOS 'plus' jobs

Co-authored-by: Lars Kanis <lars@greiz-reinsdorf.de>

[CI] Actions - fix ruby.yml typo

Release 1.31.0

Better doc of inputs, update dependencies, etc