chore: security upgrade nginx from 1.21-alpine to 1.29.0-alpine (#1938)

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### Snyk has created this PR to fix 5 vulnerabilities in the dockerfile
dependencies of this project.

Keeping your Docker base image up-to-date means you’ll benefit from
security fixes in the latest version of your chosen image.

#### Snyk changed the following file(s):

- `CI/to_be_deleted/ESS/Dockerfile`

We recommend upgrading to `nginx:1.29.0-alpine`, as this image has only
**1** known vulnerabilities. To do this, merge this pull request, then
verify your application still works as expected.



#### Vulnerabilities that will be fixed with an upgrade:

|  | Issue | Score | 

:-------------------------:|:-------------------------|:-------------------------
![high
severity](https://res.cloudinary.com/snyk/image/upload/w_20,h_20/v1561977819/icon/h.png
'high severity') | Out-of-bounds Write
<br/>[SNYK-ALPINE315-LIBWEBP-5902238](https://snyk.io/vuln/SNYK-ALPINE315-LIBWEBP-5902238)
| &nbsp;&nbsp;**829**&nbsp;&nbsp;
![high
severity](https://res.cloudinary.com/snyk/image/upload/w_20,h_20/v1561977819/icon/h.png
'high severity') | CVE-2023-44487
<br/>[SNYK-ALPINE315-NGHTTP2-5964211](https://snyk.io/vuln/SNYK-ALPINE315-NGHTTP2-5964211)
| &nbsp;&nbsp;**829**&nbsp;&nbsp;
![critical
severity](https://res.cloudinary.com/snyk/image/upload/w_20,h_20/v1561977819/icon/c.png
'critical severity') | Out-of-bounds Write
<br/>[SNYK-ALPINE315-CURL-5958915](https://snyk.io/vuln/SNYK-ALPINE315-CURL-5958915)
| &nbsp;&nbsp;**714**&nbsp;&nbsp;
![critical
severity](https://res.cloudinary.com/snyk/image/upload/w_20,h_20/v1561977819/icon/c.png
'critical severity') | Out-of-bounds Read
<br/>[SNYK-ALPINE315-PCRE2-2869383](https://snyk.io/vuln/SNYK-ALPINE315-PCRE2-2869383)
| &nbsp;&nbsp;**714**&nbsp;&nbsp;
![critical
severity](https://res.cloudinary.com/snyk/image/upload/w_20,h_20/v1561977819/icon/c.png
'critical severity') | Out-of-bounds Read
<br/>[SNYK-ALPINE315-PCRE2-2869384](https://snyk.io/vuln/SNYK-ALPINE315-PCRE2-2869384)
| &nbsp;&nbsp;**714**&nbsp;&nbsp;



---

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[//]: #
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## Summary by Sourcery

Upgrade the Nginx base image in the ESS Dockerfile from 1.21-alpine to
1.29.0-alpine to resolve multiple security vulnerabilities.

Bug Fixes:
- Address five high and critical severity CVE and out-of-bounds
vulnerabilities by updating the Nginx base image.

Enhancements:
- Bump Nginx version in CI/to_be_deleted/ESS/Dockerfile for better
security posture.

Author: Junjiequan

CI/to_be_deleted/ESS/Dockerfile

@@ -9,7 +9,7 @@ RUN npm ci
 COPY . /frontend/
 RUN npx ng build
 
-FROM nginx:1.21-alpine
+FROM nginx:1.29.0-alpine
 RUN sed -i -e 's/^root::/root:!:/' /etc/shadow
 RUN rm -rf /usr/share/nginx/html/*