fix(deps): update nginx docker tag to v1.28.0 (#420)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

docker/Dockerfile

@@ -1,4 +1,4 @@
-FROM nginx:1.27.5 AS builder
+FROM nginx:1.28.0 AS builder
 
 ENV \
     RELEASE_DIR=/tmp/release \
@@ -9,7 +9,7 @@ COPY release ${RELEASE_DIR}
 COPY docker/pick-release.sh /pick-release.sh
 RUN /pick-release.sh
 
-FROM nginx:1.27.5
+FROM nginx:1.28.0
 
 RUN apt-get update && apt-get install -y \
     supervisor \