ci(deps): bump the github-actions group across 1 directory with 2 updates

Bumps the github-actions group with 2 updates in the / directory: [anomalyco/opencode/github](https://github.com/anomalyco/opencode) and [dtolnay/rust-toolchain](https://github.com/dtolnay/rust-toolchain).


Updates `anomalyco/opencode/github` from 2.0.5 to 2.0.15
- [Release notes](https://github.com/anomalyco/opencode/releases)
- [Commits](https://github.com/anomalyco/opencode/compare/79169fe966d58fb0e0a5e41133716184a0ab4ca6...6f3639d82ed0760091792189b78f8eeb44f699b1)

Updates `dtolnay/rust-toolchain` from 6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772 to 02cb101ec7c40f2c49e1d9714d64511d8e1b74de
- [Release notes](https://github.com/dtolnay/rust-toolchain/releases)
- [Commits](https://github.com/dtolnay/rust-toolchain/compare/6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772...02cb101ec7c40f2c49e1d9714d64511d8e1b74de)

---
updated-dependencies:
- dependency-name: anomalyco/opencode/github
  dependency-version: 2.0.15
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github-actions
- dependency-name: dtolnay/rust-toolchain
  dependency-version: 02cb101ec7c40f2c49e1d9714d64511d8e1b74de
  dependency-type: direct:production
  dependency-group: github-actions
...

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

.github/workflows/issue-validation.yml

@@ -662,7 +662,7 @@ jobs:
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 #v7.0.1
 
       - name: Run opencode
-        uses: anomalyco/opencode/github@79169fe966d58fb0e0a5e41133716184a0ab4ca6 #v2.0.5
+        uses: anomalyco/opencode/github@6f3639d82ed0760091792189b78f8eeb44f699b1 #v2.0.15
         env:
           ZHIPU_API_KEY: ${{ secrets.ZHIPU_API_KEY }}
           TOKEN: ${{ secrets.GITHUB_TOKEN }}