chore(deps): update alpine docker tag to v3.21.1 (#6496)

Author: renovate-bot

docker/base/Dockerfile

@@ -1,9 +1,9 @@
 # Copyright (c) 2024 The Jaeger Authors.
 # SPDX-License-Identifier: Apache-2.0
 
-FROM alpine:3.21.0 AS cert
+FROM alpine:3.21.1 AS cert
 RUN apk add --update --no-cache ca-certificates mailcap
 
-FROM alpine:3.21.0
+FROM alpine:3.21.1
 COPY --from=cert /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
 COPY --from=cert /etc/mime.types /etc/mime.types