[OCR-372] Update System.Memory

[jordi-ironsoftware]

Title

Update System.Memory dependency.

Description

Updates System.Memory to resolve dependency conflicts.

Fixes #OCR-372
If this PR addresses an existing issue, mention the issue number here.

Type of change

Please select the relevant option by placing an 'x' inside the brackets, like this: [x].

• 🐛 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)
• 🏗️ Internal/structural update (non-breaking change that improves code quality, organization, or performance)
• 📚 This change requires a documentation update
• 🚀 DevOps build chain modification for release
• 🤖 DevOps build chain modification for CI

How Has This Been Tested?

Ran unit tests locally and on Azure. Tested with IronOCR in a separate console app.

Checklist:

Please run through the checklist as much as possible and mark the items completed by placing an 'x' inside the brackets, like this: [x].

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have successfully run all unit tests on Windows
• I have successfully run all unit tests on Linux

Additional Context

Add any other context, screenshots, or information about the pull request here.

[mee-ironsoftware]

We have System.Memory as dependency in many packages. We should remove from all repositories and keep only in IronSoftware.Common to preventing future conflict.

[jordi-ironsoftware]

@mee-ironsoftware I agree. I'll update accordingly