[Snyk] Security upgrade node from 18.17 to 18.18.2 (#383)

<p>This PR was automatically created by Snyk using the credentials of a
real user.</p><br />Keeping your Docker base image up-to-date means
you’ll benefit from security fixes in the latest version of your chosen
image.

#### Changes included in this PR 


- runner/Dockerfile

We recommend upgrading to `node:18.18.2`, as this image has only 155
known vulnerabilities. To do this, merge this pull request, then verify
your application still works as expected.



Some of the most important vulnerabilities in your base image include:

| Severity | Priority Score / 1000 | Issue | Exploit Maturity |
| :------: | :-------------------- | :---- | :--------------- |
| ![high
severity](https://res.cloudinary.com/snyk/image/upload/w_20,h_20/v1561977819/icon/h.png
"high severity") | **852** | Out-of-bounds Write
<br/>[SNYK-DEBIAN12-LIBWEBP-5893095](https://snyk.io/vuln/SNYK-DEBIAN12-LIBWEBP-5893095)
| Mature |
| ![high
severity](https://res.cloudinary.com/snyk/image/upload/w_20,h_20/v1561977819/icon/h.png
"high severity") | **852** | Out-of-bounds Write
<br/>[SNYK-DEBIAN12-LIBWEBP-5893095](https://snyk.io/vuln/SNYK-DEBIAN12-LIBWEBP-5893095)
| Mature |
| ![high
severity](https://res.cloudinary.com/snyk/image/upload/w_20,h_20/v1561977819/icon/h.png
"high severity") | **852** | Out-of-bounds Write
<br/>[SNYK-DEBIAN12-LIBWEBP-5893095](https://snyk.io/vuln/SNYK-DEBIAN12-LIBWEBP-5893095)
| Mature |
| ![high
severity](https://res.cloudinary.com/snyk/image/upload/w_20,h_20/v1561977819/icon/h.png
"high severity") | **852** | Out-of-bounds Write
<br/>[SNYK-DEBIAN12-LIBWEBP-5893095](https://snyk.io/vuln/SNYK-DEBIAN12-LIBWEBP-5893095)
| Mature |
| ![high
severity](https://res.cloudinary.com/snyk/image/upload/w_20,h_20/v1561977819/icon/h.png
"high severity") | **600** | Resource Exhaustion
<br/>[SNYK-DEBIAN12-NGHTTP2-5953379](https://snyk.io/vuln/SNYK-DEBIAN12-NGHTTP2-5953379)
| Mature |



---

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[//]: #
'snyk:metadata:{"prId":"d2f243c1-7c13-48b1-a40a-6938d252b366","prPublicId":"d2f243c1-7c13-48b1-a40a-6938d252b366","dependencies":[{"name":"node","from":"18.17","to":"18.18.2"}],"packageManager":"dockerfile","projectPublicId":"7b2bf28a-8d8c-4d66-bba4-4e997309ba53","projectUrl":"https://app.snyk.io/org/pagoda-pilot/project/7b2bf28a-8d8c-4d66-bba4-4e997309ba53?utm_source=github-enterprise&utm_medium=referral&page=fix-pr","type":"user-initiated","patch":[],"vulns":["SNYK-DEBIAN12-LIBWEBP-5893095","SNYK-DEBIAN12-NGHTTP2-5953379"],"upgrade":["SNYK-DEBIAN12-LIBWEBP-5893095","SNYK-DEBIAN12-LIBWEBP-5893095","SNYK-DEBIAN12-LIBWEBP-5893095","SNYK-DEBIAN12-LIBWEBP-5893095","SNYK-DEBIAN12-NGHTTP2-5953379"],"isBreakingChange":false,"env":"prod","prType":"fix","templateVariants":["updated-fix-title","priorityScore"],"priorityScoreList":[852,600],"remediationStrategy":"vuln"}'

---

**Learn how to fix vulnerabilities with free interactive lessons:**

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Co-authored-by: snyk-bot <snyk-bot@snyk.io>

runner/Dockerfile

@@ -1,10 +1,10 @@
-FROM node:18.17 AS builder
+FROM node:18.18.2 AS builder
 WORKDIR /usr/src/app
 COPY . .
 RUN npm install
 RUN npm run build
 
-FROM node:18.17
+FROM node:18.18.2
 WORKDIR /usr/src/app
 COPY --from=builder /usr/src/app/package*.json ./
 RUN npm install --omit=dev