Bump golang from 1.26.3-trixie to 1.26.4-trixie in /baseimages (#2511)

Bumps golang from 1.26.3-trixie to 1.26.4-trixie.


[![Dependabot compatibility
score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=golang&package-manager=docker&previous-version=1.26.3-trixie&new-version=1.26.4-trixie)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

Dependabot will resolve any conflicts with this PR as long as you don't
alter it yourself. You can also trigger a rebase manually by commenting
`@dependabot rebase`.

[//]: # (dependabot-automerge-start)
[//]: # (dependabot-automerge-end)

---

<details>
<summary>Dependabot commands and options</summary>
<br />

You can trigger Dependabot actions by commenting on this PR:
- `@dependabot rebase` will rebase this PR
- `@dependabot recreate` will recreate this PR, overwriting any edits
that have been made to it
- `@dependabot show <dependency name> ignore conditions` will show all
of the ignore conditions of the specified dependency
- `@dependabot ignore this major version` will close this PR and stop
Dependabot creating any more for this major version (unless you reopen
the PR or upgrade to it yourself)
- `@dependabot ignore this minor version` will close this PR and stop
Dependabot creating any more for this minor version (unless you reopen
the PR or upgrade to it yourself)
- `@dependabot ignore this dependency` will close this PR and stop
Dependabot creating any more for this dependency (unless you reopen the
PR or upgrade to it yourself)


</details>

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

baseimages/Dockerfile.golang

@@ -1,3 +1,3 @@
-FROM golang:1.26.3-trixie@sha256:f34e7161a14638b812ce491bd89c81718f309cac6ec0ffe016e5fbcb4bdc8c06
+FROM golang:1.26.4-trixie@sha256:0dcba0d95dbfb072e9917a106b9e07d7cc298097dc83e9307056ef1889de654d
 
 CMD echo this is a dummy file used to automate dependency upgrades for plugins