build(deps): bump alpine from 51b6726 to c5b1261 in /examples/ope…

…ntelemetry (envoyproxy#32085)

build(deps): bump alpine in /examples/opentelemetry

Bumps alpine from `51b6726` to `c5b1261`.

---
updated-dependencies:
- dependency-name: alpine
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

examples/opentelemetry/Dockerfile-opentelemetry

@@ -1,4 +1,4 @@
-FROM alpine:3.19@sha256:51b67269f354137895d43f3b3d810bfacd3945438e94dc5ac55fdac340352f48 as otelc_curl
+FROM alpine:3.19@sha256:c5b1261d6d3e43071626931fc004f70149baeba2c8ec672bd4f27761f8e1ad6b as otelc_curl
 RUN apk --update add curl
 
 FROM otel/opentelemetry-collector:latest@sha256:2cfa5eb469eaf226c1fd62e6e3d38f94a8550951f49136fef3c78f38c211415e