Update QCBOR_VERSION to 306cfc2

Change-Id: Ifdb0a0dc6ae1d302066d61f6b071d7d694586713
Signed-off-by: David Vincze <david.vincze@arm.com>
diff --git a/tf-m-code-coverage.yaml b/tf-m-code-coverage.yaml
index e332b9d..5485f31 100644
--- a/tf-m-code-coverage.yaml
+++ b/tf-m-code-coverage.yaml
@@ -69,7 +69,7 @@
           default: 'https://github.com/laurencelundblade/QCBOR.git'
       - string:
           name: 'QCBOR_VERSION'
-          default: 'b0e7033268e88c9f27146fa9a1415ef4c19ebaff'
+          default: '306cfc269c09a35299842ebf5f97402050be72df'
       - string:
           name: 'LAVA_URL'
           default: 'https://tf.validation.linaro.org'