all: bump to v0.50.0
This commit will be tagged v0.50.0.
# Changes
+## v0.50.0
+
+- profiler:
+ - Support disabling CPU profile collection.
+ - Log when a profile creation attempt begins.
+- compute/metadata:
+ - Fix panic on malformed URLs.
+ - InstanceName returns actual instance name.
+- Various updates to autogenerated clients.
+
## v0.49.0
- functions/metadata:
