[Snyk] Security upgrade alpine from 3.18 to 3

[secpanda]

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): - `Dockerfile` We recommend upgrading to `alpine:3`, as this image has only **3** 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 | :-------------------------:|:-------------------------|:-------------------------  | Out-of-bounds Write
[SNYK-ALPINE318-BUSYBOX-6913411](https://snyk.io/vuln/SNYK-ALPINE318-BUSYBOX-6913411) |   **80**    | Use After Free
[SNYK-ALPINE318-BUSYBOX-7249236](https://snyk.io/vuln/SNYK-ALPINE318-BUSYBOX-7249236) |   **80**    | Use After Free
[SNYK-ALPINE318-BUSYBOX-7249265](https://snyk.io/vuln/SNYK-ALPINE318-BUSYBOX-7249265) |   **80**    | Use After Free
[SNYK-ALPINE318-BUSYBOX-7249265](https://snyk.io/vuln/SNYK-ALPINE318-BUSYBOX-7249265) |   **80**    | Use After Free
[SNYK-ALPINE318-BUSYBOX-7249419](https://snyk.io/vuln/SNYK-ALPINE318-BUSYBOX-7249419) |   **80**   --- > [!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/console-8j9/project/d4462947-60c1-4e72-b34b-82b4b0a04d48?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/console-8j9/project/d4462947-60c1-4e72-b34b-82b4b0a04d48?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":"3.18","to":"3"}],"env":"prod","issuesToFix":[{"exploit_maturity":"No Known Exploit","id":"SNYK-ALPINE318-BUSYBOX-7249265","priority_score":80,"priority_score_factors":[{"name":"confidentiality","value":"none"},{"name":"integrity","value":"none"},{"name":"availability","value":"high"},{"name":"scope","value":"unchanged"},{"name":"exploitCodeMaturity"},{"name":"userInteraction","value":"required"},{"name":"privilegesRequired","value":"none"},{"name":"attackComplexity","value":"low"},{"name":"attackVector","value":"local"},{"name":"epss","value":0.00044},{"name":"isTrending","value":false},{"name":"publicationDate","value":"Wed Jun 12 2024 14:44:31 GMT+0000 (Coordinated Universal 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