Bump version number for rc3.
diff --git a/mesonbuild/coredata.py b/mesonbuild/coredata.py
index 6e7a2f5..afe4c1b 100644
--- a/mesonbuild/coredata.py
+++ b/mesonbuild/coredata.py
@@ -72,7 +72,7 @@
 #
 # Pip requires that RCs are named like this: '0.1.0.rc1'
 # But the corresponding Git tag needs to be '0.1.0rc1'
-version = '1.5.0.rc2'
+version = '1.5.0.rc3'
 
 # The next stable version when we are in dev. This is used to allow projects to
 # require meson version >=1.2.0 when using 1.1.99. FeatureNew won't warn when