meson: update to 0.61.3

This matches the version used in Yocto now.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I3c19e5afd3eb23a04e9175bb233144b2b85d13c0
diff --git a/scripts/build-unit-test-docker b/scripts/build-unit-test-docker
index 6962658..2a3bed7 100755
--- a/scripts/build-unit-test-docker
+++ b/scripts/build-unit-test-docker
@@ -867,7 +867,7 @@
 RUN pip3 install inflection
 RUN pip3 install pycodestyle
 RUN pip3 install jsonschema
-RUN pip3 install meson==0.58.1
+RUN pip3 install meson==0.61.3
 RUN pip3 install protobuf
 RUN pip3 install codespell
 RUN pip3 install requests