package/modem-manager: bump version to 1.18.12
This release fixes a few very critical issues that happpen when using a glib2 newer or equal
than 2.73.2 (after the pcre1->pcre2 update)
Signed-off-by: Michael Fischer <mf@go-sys.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>