[Snyk] Security upgrade alpine from 3.17.3 to 3.18.6

[briangallagher]

This PR was automatically created by Snyk using the credentials of a real user.

 ### Snyk has created this PR to fix 4 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): - `dev-environments/http-proxy-plain-http-upstream/tinyproxy.Dockerfile` We recommend upgrading to `alpine:3.18.6`, as this image has only **6** 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 | :-------------------------:|:-------------------------|:-------------------------  | CVE-2023-5363
[SNYK-ALPINE317-OPENSSL-6032385](https://snyk.io/vuln/SNYK-ALPINE317-OPENSSL-6032385) |   **614**    | CVE-2023-5363
[SNYK-ALPINE317-OPENSSL-6032385](https://snyk.io/vuln/SNYK-ALPINE317-OPENSSL-6032385) |   **614**    | Use After Free
[SNYK-ALPINE317-BUSYBOX-7254940](https://snyk.io/vuln/SNYK-ALPINE317-BUSYBOX-7254940) |   **586**    | Use After Free
[SNYK-ALPINE317-BUSYBOX-7254941](https://snyk.io/vuln/SNYK-ALPINE317-BUSYBOX-7254941) |   **586**    | Use After Free
[SNYK-ALPINE317-BUSYBOX-7254942](https://snyk.io/vuln/SNYK-ALPINE317-BUSYBOX-7254942) |   **586**   --- > [!IMPORTANT] > > - Check the changes in this PR to ensure they won't cause issues with your project. > - Max score is 1000. Note that the real score may have changed since the PR was raised. > - This PR was automatically created by Snyk using the credentials of a real user. --- **Note:** _You are seeing this because you or someone else with access to this repository has authorized Snyk to open fix PRs._ For more information: 🧐 [View latest project report](https://app.snyk.io/org/application-services-red-hat-3scale-api-management/project/eaf22bf8-2493-4dd6-bc54-2243adbb6715?utm_source=github&utm_medium=referral&page=fix-pr) 📜 [Customise PR templates](https://docs.snyk.io/scan-using-snyk/pull-requests/snyk-fix-pull-or-merge-requests/customize-pr-templates) 🛠 [Adjust project settings](https://app.snyk.io/org/application-services-red-hat-3scale-api-management/project/eaf22bf8-2493-4dd6-bc54-2243adbb6715?utm_source=github&utm_medium=referral&page=fix-pr/settings) 📚 [Read about Snyk's upgrade logic](https://support.snyk.io/hc/en-us/articles/360003891078-Snyk-patches-to-fix-vulnerabilities) --- **Learn how to fix vulnerabilities with free interactive lessons:** 🦉 [Use After Free](https://learn.snyk.io/lesson/use-after-free/?loc=fix-pr) [//]: # 'snyk:metadata:{"customTemplate":{"variablesUsed":[],"fieldsUsed":[]},"dependencies":[{"name":"alpine","from":"3.17.3","to":"3.18.6"}],"env":"prod","issuesToFix":[{"exploit_maturity":"No Known Exploit","id":"SNYK-ALPINE317-OPENSSL-6032385","priority_score":614,"priority_score_factors":[{"type":"fixability","label":true,"score":214},{"type":"severity","label":"high","score":400},{"type":"scoreVersion","label":"v1","score":1}],"severity":"high","title":"CVE-2023-5363"},{"exploit_maturity":"No Known Exploit","id":"SNYK-ALPINE317-OPENSSL-6032385","priority_score":614,"priority_score_factors":[{"type":"fixability","label":true,"score":214},{"type":"severity","label":"high","score":400},{"type":"scoreVersion","label":"v1","score":1}],"severity":"high","title":"CVE-2023-5363"},{"exploit_maturity":"No Known Exploit","id":"SNYK-ALPINE317-BUSYBOX-7254940","priority_score":586,"priority_score_factors":[{"type":"freshness","label":true,"score":71},{"type":"fixability","label":true,"score":214},{"type":"severity","label":"medium","score":300},{"type":"scoreVersion","label":"v1","score":1}],"severity":"medium","title":"Use After Free"},{"exploit_maturity":"No Known Exploit","id":"SNYK-ALPINE317-BUSYBOX-7254941","priority_score":586,"priority_score_factors":[{"type":"freshness","label":true,"score":71},{"type":"fixability","label":true,"score":214},{"type":"severity","label":"medium","score":300},{"type":"scoreVersion","label":"v1","score":1}],"severity":"medium","title":"Use After Free"},{"exploit_maturity":"No Known Exploit","id":"SNYK-ALPINE317-BUSYBOX-7254942","priority_score":586,"priority_score_factors":[{"type":"freshness","label":true,"score":71},{"type":"fixability","label":true,"score":214},{"type":"severity","label":"medium","score":300},{"type":"scoreVersion","label":"v1","score":1}],"severity":"medium","title":"Use After Free"}],"prId":"50132c3f-481a-4186-8983-33ecdfe79c4c","prPublicId":"50132c3f-481a-4186-8983-33ecdfe79c4c","packageManager":"dockerfile","priorityScoreList":[614,586,586,586],"projectPublicId":"eaf22bf8-2493-4dd6-bc54-2243adbb6715","projectUrl":"https://app.snyk.io/org/application-services-red-hat-3scale-api-management/project/eaf22bf8-2493-4dd6-bc54-2243adbb6715?utm_source=github&utm_medium=referral&page=fix-pr","prType":"fix","templateFieldSources":{"branchName":"default","commitMessage":"default","description":"default","title":"default"},"templateVariants":["updated-fix-title","priorityScore"],"type":"auto","upgrade":["SNYK-ALPINE317-BUSYBOX-7254940","SNYK-ALPINE317-BUSYBOX-7254941","SNYK-ALPINE317-BUSYBOX-7254942","SNYK-ALPINE317-OPENSSL-6032385","SNYK-ALPINE317-OPENSSL-6032385"],"vulns":["SNYK-ALPINE317-OPENSSL-6032385","SNYK-ALPINE317-BUSYBOX-7254940","SNYK-ALPINE317-BUSYBOX-7254941","SNYK-ALPINE317-BUSYBOX-7254942"],"patch":[],"isBreakingChange":false,"remediationStrategy":"vuln"}'

[eguzki]

superseded by https://github.com/3scale/APIcast/pull/1473