Bump julia-actions/setup-julia from 2.6.0 to 2.6.1 (#120927)

Bumps [julia-actions/setup-julia](https://github.com/julia-actions/setup-julia) from 2.6.0 to 2.6.1.
- [Release notes](https://github.com/julia-actions/setup-julia/releases)
- [Changelog](https://github.com/julia-actions/setup-julia/blob/master/devdocs/making_a_new_release.md)
- [Commits](julia-actions/setup-julia@v2.6...5c9647d)

---
updated-dependencies:
- dependency-name: julia-actions/setup-julia
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

.github/workflows/feed.yml

@@ -54,7 +54,7 @@ jobs:
     if: ${{ (github.event.label.name == 'new package' || github.event.label.name == 'zulip test') && github.repository == github.event.pull_request.head.repo.full_name }}
     runs-on: ubuntu-latest
     steps:
-    - uses: julia-actions/setup-julia@9b79636afcfb07ab02c256cede01fe2db6ba808c # v2.6.0
+    - uses: julia-actions/setup-julia@5c9647d97b78a5debe5164e9eec09d653d29bd71 # v2.6.1
       with:
         version: 1.6.2
     - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2