Revert "[dbus-broker] pin meson to 1.7.2 for now (#13286)"

This reverts commit 57fcdcd.

mesonbuild/meson#14533 was addressed so it
should be fine to keep rolling forward again.

Author: evverx

projects/dbus-broker/build.sh

@@ -54,8 +54,7 @@ if [[ "$SANITIZER" == undefined ]]; then
     MESON_CXXFLAGS+=" $UBSAN_FLAGS"
 fi
 
-# meson is pinned to get around https://github.com/mesonbuild/meson/issues/14533
-pip3 install meson==1.7.2 ninja
+pip3 install meson ninja
 
 if ! CFLAGS="$MESON_CFLAGS" CXXFLAGS="$MESON_CXXFLAGS" LDFLAGS="$MESON_LDFLAGS" meson -Db_lundef=false -Dlauncher=false build; then
     cat build/meson-logs/meson-log.txt