MLBEDSW-6184: Release notes for version 3.3.0

 - Bump minor release version and add release notes
 - Update README and SUPPORTED_OPS versions

Change-Id: Ic14d028483c12d281e69515b25f66346d9a3afeb
Signed-off-by: James Peet <james.peet@arm.com>
Signed-off-by: Tim Hall <tim.hall@arm.com>
diff --git a/setup.py b/setup.py
index 4982bb3..488d296 100644
--- a/setup.py
+++ b/setup.py
@@ -40,7 +40,7 @@
 this_directory = os.path.abspath(os.path.dirname(__file__))
 with open(os.path.join(this_directory, "README.md"), encoding="utf-8") as f:
     long_description = f.read()
-    tag = "3.2.0"
+    tag = "3.3.0"
     url = f"https://review.mlplatform.org/plugins/gitiles/ml/ethos-u/ethos-u-vela/+/refs/tags/{tag}/"
     # Find all markdown links that match the format:  [text](link)
     for match, link in re.findall(r"(\[.+?\]\((.+?)\))", long_description):