Bump actions/checkout from 6.0.2 to 6.0.3 (#9715)

Bumps [actions/checkout](https://github.com/actions/checkout) from 6.0.2
to 6.0.3.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/actions/checkout/releases">actions/checkout's
releases</a>.</em></p>
<blockquote>
<h2>v6.0.3</h2>
<h2>What's Changed</h2>
<ul>
<li>Update changelog by <a
href="https://github.com/ericsciple"><code>@​ericsciple</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2357">actions/checkout#2357</a></li>
<li>fix: expand merge commit SHA regex and add SHA-256 test cases by <a
href="https://github.com/yaananth"><code>@​yaananth</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2414">actions/checkout#2414</a></li>
<li>Fix checkout init for SHA-256 repositories by <a
href="https://github.com/yaananth"><code>@​yaananth</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2439">actions/checkout#2439</a></li>
<li>Update changelog for v6.0.3 by <a
href="https://github.com/yaananth"><code>@​yaananth</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2446">actions/checkout#2446</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/yaananth"><code>@​yaananth</code></a>
made their first contribution in <a
href="https://redirect.github.com/actions/checkout/pull/2414">actions/checkout#2414</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/actions/checkout/compare/v6...v6.0.3">https://github.com/actions/checkout/compare/v6...v6.0.3</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="df4cb1c069"><code>df4cb1c</code></a>
Update changelog for v6.0.3 (<a
href="https://redirect.github.com/actions/checkout/issues/2446">#2446</a>)</li>
<li><a
href="1cce3390c2"><code>1cce339</code></a>
Fix checkout init for SHA-256 repositories (<a
href="https://redirect.github.com/actions/checkout/issues/2439">#2439</a>)</li>
<li><a
href="900f2210b1"><code>900f221</code></a>
fix: expand merge commit SHA regex and add SHA-256 test cases (<a
href="https://redirect.github.com/actions/checkout/issues/2414">#2414</a>)</li>
<li><a
href="0c366fd6a8"><code>0c366fd</code></a>
Update changelog (<a
href="https://redirect.github.com/actions/checkout/issues/2357">#2357</a>)</li>
<li>See full diff in <a
href="https://github.com/actions/checkout/compare/v6.0.2...v6.0.3">compare
view</a></li>
</ul>
</details>
<br />


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.github/workflows/issue-backlog-processor.lock.yml

@@ -33,7 +33,7 @@
 # Custom actions used:
 #   - actions/cache/restore@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
 #   - actions/cache/save@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
-#   - actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+#   - actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
 #   - actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
 #   - actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9
 #   - actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
@@ -127,7 +127,7 @@ jobs:
         env:
           COPILOT_GITHUB_TOKEN: ${{ secrets.COPILOT_GITHUB_TOKEN }}
       - name: Checkout .github and .agents folders
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           persist-credentials: false
           sparse-checkout: |
@@ -362,7 +362,7 @@ jobs:
             echo "GH_AW_SAFE_OUTPUTS_TOOLS_PATH=${RUNNER_TEMP}/gh-aw/safeoutputs/tools.json"
           } >> "$GITHUB_OUTPUT"
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           persist-credentials: false
       - name: Create gh-aw temp directory
@@ -1125,7 +1125,7 @@ jobs:
           echo "GH_AW_AGENT_OUTPUT=/tmp/gh-aw/agent_output.json" >> "$GITHUB_OUTPUT"
       - name: Checkout repository for patch context
         if: needs.agent.outputs.has_patch == 'true'
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           persist-credentials: false
       # --- Threat Detection ---