Bump Features/DEBUGGER from c9efe78 to d7db129 (#1020)

Bumps
[Features/DEBUGGER](https://github.com/microsoft/mu_feature_debugger)
from `c9efe78` to `d7db129`.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/microsoft/mu_feature_debugger/commit/d7db129716570654207e194be97fb0918425d0db"><code>d7db129</code></a>
Repo File Sync: synced file(s) with microsoft/mu_devops (<a
href="https://redirect.github.com/microsoft/mu_feature_debugger/issues/50">#50</a>)</li>
<li><a
href="https://github.com/microsoft/mu_feature_debugger/commit/312b83662f3eb58ce7a7ce9fdba0a3d1ef5d7505"><code>312b836</code></a>
pip: update edk2-pytool-library requirement from ~=0.21.9 to ~=0.21.10
(<a
href="https://redirect.github.com/microsoft/mu_feature_debugger/issues/49">#49</a>)</li>
<li><a
href="https://github.com/microsoft/mu_feature_debugger/commit/3553982820cc6b2e730d2e13d47ae9ee38ed6acf"><code>3553982</code></a>
pip: bump antlr4-python3-runtime from 4.13.1 to 4.13.2 (<a
href="https://redirect.github.com/microsoft/mu_feature_debugger/issues/48">#48</a>)</li>
<li><a
href="https://github.com/microsoft/mu_feature_debugger/commit/4de89c0a2792b30a648c0dac1860cf5fabbe8d90"><code>4de89c0</code></a>
pip: update edk2-pytool-library requirement from ~=0.21.8 to ~=0.21.9
(<a
href="https://redirect.github.com/microsoft/mu_feature_debugger/issues/47">#47</a>)</li>
<li>See full diff in <a
href="https://github.com/microsoft/mu_feature_debugger/compare/c9efe78878f0c144ca9a7373582347ae16719b02...d7db129716570654207e194be97fb0918425d0db">compare
view</a></li>
</ul>
</details>
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