Bump MU_BASECORE from 2023020009.0.2 to 2023020009.0.3 (#814)

Bumps MU_BASECORE from `2023020009.0.2` to `2023020009.0.3`


Introduces 5 new commits in
[MU_BASECORE](https://github.com/microsoft/mu_basecore.git).

<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/microsoft/mu_basecore/commit/3babb5a5d0d655c51f848db0351155da800c7492">3babb5</a>
release-basetools.yml: Update for compatibility with v4 GitHub actions
(<a
href="https://github.com/microsoft/mu_basecore/pull/655">#655</a>)</li>
<li><a
href="https://github.com/microsoft/mu_basecore/commit/1276f62bb920db7a1798122a5876385052d21652">1276f6</a>
pip: update edk2-pytool-library requirement from ~=0.19.7 to ~=0.19.8
(<a
href="https://github.com/microsoft/mu_basecore/pull/657">#657</a>)</li>
<li><a
href="https://github.com/microsoft/mu_basecore/commit/902b6d8063d4c4426f2602313fbb3c8d832e581d">902b6d</a>
pip: update edk2-pytool-extensions requirement from ~=0.26.3 to ~=0.26.4
(<a
href="https://github.com/microsoft/mu_basecore/pull/656">#656</a>)</li>
<li><a
href="https://github.com/microsoft/mu_basecore/commit/8895acc133ebbd2a26588600c961a5718d6a5f8f">8895ac</a>
BaseTools: Resolve regex syntax warnings</li>
<li><a
href="https://github.com/microsoft/mu_basecore/commit/39159257627e68707b86eaac1450a1972c285cd9">391592</a>
Update iasl ext dep to 20230628 (<a
href="https://github.com/microsoft/mu_basecore/pull/658">#658</a>)</li>
</ul>
</details>

Signed-off-by: Project Mu Bot <[email protected]>

Signed-off-by: Project Mu Bot <[email protected]>
Co-authored-by: kuqin12 <[email protected]>