Add manylinux_2_17 wheel targets

[zastrowm]

Add the manylinux_2_17 targets as requested by #1125

Targets being Added

The original issue suggested only adding manylinux_2_17_x86_64 and manylinux_2_17_aarch64; however, given that most of the popular packages targeted ppc64/armv7l/s390x/ppc64le/i686 and this package targeted those arch's for manylinux2014, I included them in this PR. If we wish to reduce it just to x64/aarch64, we can do that instead.

[BoboTiG]

That's fine like this, thanks for the broader approach 💪

Wheels are properly created (https://github.com/gorakhargosh/watchdog/actions/runs/17475049194/job/49637638160?pr=1126):

(...)
-rw-r--r-- 1 runner docker 86529 Sep  4 20:58 watchdog-7.0.0-py3-none-manylinux_2_17_aarch64.whl
-rw-r--r-- 1 runner docker 86531 Sep  4 20:58 watchdog-7.0.0-py3-none-manylinux_2_17_armv7l.whl
-rw-r--r-- 1 runner docker 86527 Sep  4 20:58 watchdog-7.0.0-py3-none-manylinux_2_17_i686.whl
-rw-r--r-- 1 runner docker 86530 Sep  4 20:58 watchdog-7.0.0-py3-none-manylinux_2_17_ppc64.whl
-rw-r--r-- 1 runner docker 86530 Sep  4 20:58 watchdog-7.0.0-py3-none-manylinux_2_17_ppc64le.whl
-rw-r--r-- 1 runner docker 86527 Sep  4 20:58 watchdog-7.0.0-py3-none-manylinux_2_17_s390x.whl
-rw-r--r-- 1 runner docker 86528 Sep  4 20:58 watchdog-7.0.0-py3-none-manylinux_2_17_x86_64.whl
(...)