Fix CI job

Decreased meson version to 0.54.3 to enable CI jobs.
Fixed Invoke arguments in unit tests.

Change-Id: I75cdce3ebb2bffd7732db30b2f718a3728c277c8
Signed-off-by: Wludzik, Jozef <jozef.wludzik@intel.com>
diff --git a/meson.build b/meson.build
index 9dcbcb2..22e0cc3 100644
--- a/meson.build
+++ b/meson.build
@@ -1,7 +1,7 @@
 project(
     'Telemetry',
     'cpp',
-    meson_version: '>=0.55.0',
+    meson_version: '>=0.54.3',
     default_options: [
         'buildtype=debugoptimized',
         'cpp_std=c++17',