Bump node from 16-alpine to 18-alpine in /wrongsecrets-balancer

Bumps node from 16-alpine to 18-alpine.

---
updated-dependencies:
- dependency-name: node
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

wrongsecrets-balancer/Dockerfile

@@ -1,18 +1,18 @@
-FROM node:16-alpine as build
+FROM node:18-alpine as build
 RUN mkdir -p /home/app
 WORKDIR /home/app
 COPY package.json package-lock.json ./
 RUN npm ci --production
 
-FROM node:16-alpine as ui
+FROM node:18-alpine as ui
 RUN mkdir -p /home/app
 WORKDIR /home/app
 COPY ui/package.json ui/package-lock.json ./
 RUN npm ci
 COPY ui/ ./
 RUN npm run build
 
-FROM node:16-alpine
+FROM node:18-alpine
 ARG NODE_ENV
 RUN addgroup --system --gid 1001 app && adduser app --system --uid 1001 --ingroup app
 WORKDIR /home/app/