Bump julia-actions/julia-buildpkg from 1.6.0 to 1.7.0

Bumps [julia-actions/julia-buildpkg](https://github.com/julia-actions/julia-buildpkg) from 1.6.0 to 1.7.0.
- [Release notes](https://github.com/julia-actions/julia-buildpkg/releases)
- [Commits](julia-actions/julia-buildpkg@90dd6f2...e3eb439)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/CI.yml

@@ -53,6 +53,6 @@ jobs:
         with:
           version: ${{ matrix.version }}
 
-      - uses: julia-actions/julia-buildpkg@90dd6f23eb49626e4e6612cb9d64d456f86e6a1c # v1.6.0
+      - uses: julia-actions/julia-buildpkg@e3eb439fad4f9aba7da2667e7510e4a46ebc46e1 # v1.7.0
 
       - uses: julia-actions/julia-runtest@1e03e0122a598a569004c1e26950e2547b350ec0 # v1.11.1