Bump nginx from ca16009 to ef587d1 in /build (#5515)

Bumps nginx from `ca16009` to `ef587d1`.

---
updated-dependencies:
- dependency-name: nginx
  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>
Co-authored-by: Jakub Jarosz <99677300+jjngx@users.noreply.github.com>

build/Dockerfile

@@ -16,7 +16,7 @@ FROM ghcr.io/nginxinc/alpine-fips:0.2.0-alpine3.19@sha256:1744ae3a8e795daf771f3f
 
 
 ############################################# Base image for Alpine #############################################
-FROM nginx:1.26.0-alpine@sha256:ca16009a8c25f52193506d4c90c98efbad4b6cbe73372e2a27972f05c5e02f15 AS alpine
+FROM nginx:1.26.0-alpine@sha256:ef587d1eb99e991291c582bfb74f27db27f7ca2c095d4ba06cc3f7c910a0c7b3 AS alpine
 
 RUN --mount=type=bind,from=alpine-opentracing-lib,target=/tmp/ot/ \
 	apk add --no-cache libcap libstdc++ \
@@ -26,7 +26,7 @@ RUN --mount=type=bind,from=alpine-opentracing-lib,target=/tmp/ot/ \
 
 
 ############################################# Base image for Debian #############################################
-FROM nginx:1.26.0@sha256:ba9587717b056e1993b051f71cea30ddd5caf09ae2087b1eeb11329f52468e49 AS debian
+FROM nginx:1.26.0@sha256:192e88a0053c178683ca139b9d9a2afb0ad986d171fae491949fe10970dd9da9 AS debian
 
 RUN --mount=type=bind,from=opentracing-lib,target=/tmp/ot/ \
 	apt-get update \