fix(build): Fix missing include since platform-espressif32 v6.10.0

[SquaredPotato]

Description

Add a missing include to es8311.hpp

Motivation and Context

For some reason, only after upgrading to v6.10.0 of platform-espressif32 did we start getting compiler errors on this.

How has this been tested?

First failing pipeline after upgrade:

• https://github.com/smartknob-ha/firmware/actions/runs/13017702817/job/36313111332?pr=70#step:5:331

Pipeline where I've added the #include <cstdint>:

• https://github.com/smartknob-ha/firmware/actions/runs/13038847244/job/36375735030

Screenshots (if appropriate, e.g. schematic, board, console logs, lab pictures):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update
• Hardware (schematic, board, system design) change
• Software change

Checklist:

• My change requires a change to the documentation.
• I have added / updated the documentation related to this change via either README or WIKI

Software

• I have added tests to cover my changes.
• I have updated the .github/workflows/build.yml file to add my new test to the automated cloud build github action.
• All new and existing tests passed.
• My code follows the code style of this project.

[github-actions]

✅Static analysis result - no issues found! ✅

[SquaredPotato]

Apparently this is happening because of a change in GCC: https://gcc.gnu.org/gcc-14/porting_to.html

Some C++ Standard Library headers have been changed to no longer include other headers that were being used internally by the library. As such, C++ programs that used standard library components without including the right headers will no longer compile.

The following headers are used less widely in libstdc++ and may need to be included explicitly when compiling with GCC 14:
- <algorithm> (for std::copy_n, std::find_if, std::lower_bound, std::remove, std::reverse, std::sort etc.)
- <cstdint> (for std::int8_t, std::int32_t etc.)