chore(deps): update otel/weaver docker tag to v0.21.2

Author: renovate[bot]

ibm-mq-metrics/weaver.Dockerfile

@@ -3,4 +3,4 @@
 # Dependabot can keep this file up to date with latest containers.
 
 # Weaver is used to generate markdown docs, and enforce policies on the model and run integration tests.
-FROM otel/weaver:v0.20.0@sha256:fa4f1c6954ecea78ab1a4e865bd6f5b4aaba80c1896f9f4a11e2c361d04e197e AS weaver
+FROM otel/weaver:v0.21.2@sha256:2401de985c38bdb98b43918e2f43aa36b2afed4aa5669ac1c1de0a17301cd36d AS weaver