chore(deps): update nginx docker tag to v1.28.0 (#196)

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

Author: renovate[bot]

Dockerfile

@@ -12,6 +12,6 @@ COPY . ./
 
 RUN npm run build
 
-FROM nginx:1.18.0-alpine
+FROM nginx:1.28.0-alpine
 
 COPY --from=builder /app/_site /usr/share/nginx/html