Meson project update to v50.0

There was a recent change in our meson files that requires a feature
that was introduced in meson v50.0. Simply updating the project
requirement to ensure that version is required to build.

Signed-off-by: Zane Shelley <zshelle@us.ibm.com>
Change-Id: Ie837fb87bcbf56227945cbead781ec6be89fef0b
diff --git a/meson.build b/meson.build
index b7cb17e..842b539 100644
--- a/meson.build
+++ b/meson.build
@@ -1,6 +1,6 @@
 # See README.md for details.
 project('openpower-hw-diags', 'cpp',
-        version: '0.1', meson_version: '>=0.49.0',
+        version: '0.1', meson_version: '>=0.50.0',
         default_options: [
           'warning_level=3',
           'werror=true',