support/dependencies: requires cmake >= 3.18

gerbera requires cmake 3.18 since version 1.10.0 and
https://github.com/gerbera/gerbera/commit/ac05976dda335ce1c28a5cc78e4e009a145e3559

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

support/dependencies/check-host-cmake.mk

@@ -1,9 +1,9 @@
-# Set this to either 3.16 or higher, depending on the highest minimum
+# Set this to either 3.18 or higher, depending on the highest minimum
 # version required by any of the packages bundled in Buildroot. If a
 # package is bumped or a new one added, and it requires a higher
 # version, our cmake infra will catch it and build its own.
 #
-BR2_CMAKE_VERSION_MIN = 3.16
+BR2_CMAKE_VERSION_MIN = 3.18
 
 BR2_CMAKE_CANDIDATES ?= cmake cmake3
 BR2_CMAKE ?= $(call suitable-host-package,cmake,\