Step up external API version

A commit pertaining to MLBEDSW-4738 where the
functionality of find_block_configs() in the
external API was reinstated had previously been
merged, but was done without increasing the API
version. This commit amends that mistake.

Signed-off-by: Dwight Lidman <dwight.lidman@arm.com>
Change-Id: I32f559d626e0f4e93c522813b6f4e12beaa50e57
diff --git a/ethosu/vela/api.py b/ethosu/vela/api.py
index e31c373..69c6040 100644
--- a/ethosu/vela/api.py
+++ b/ethosu/vela/api.py
@@ -26,7 +26,7 @@
 import numpy
 
 API_VERSION_MAJOR = 1
-API_VERSION_MINOR = 0
+API_VERSION_MINOR = 1
 API_VERSION = f"{API_VERSION_MAJOR}.{API_VERSION_MINOR}"