Bump numpy to enable installation on Python 3.13+

[Copilot]

On Python 3.13 (e.g. Fedora 42's default interpreter), pip install microbots fails while building numpy from source. The pinned numpy==1.26.4 predates 3.13 and ships no cp313 wheels, so pip falls back to a Meson source build that fails on many machines.

Changes

• requirements.txt — bump numpy==1.26.4 → numpy==2.2.6, the only pinned dependency lacking Python 3.13 wheels. The remaining pins already provide cp313 wheels, so the full set now resolves wheel-only on 3.11–3.13.
• pyproject.toml — add Programming Language :: Python :: 3.12 and :: 3.13 trove classifiers to advertise supported versions (alongside existing requires-python = ">=3.11").
• docs/getting-started/prerequisites.md — replace the "3.10 or later, but below 3.13" guidance and the "fix in progress" note with "Python 3.11 or later (3.13 supported)".

Notes for reviewers

• numpy 2.2.6 covers Python 3.10–3.13; no source code imports numpy directly (purely transitive via datasets/pandas/pyarrow), so the major bump is install-surface only.
• Verified on CPython 3.13: full requirements.txt installs with --only-binary=:all: (no source builds), and microbots builds, installs, and imports cleanly.

Original prompt

Go through the issue
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#137
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I want to ensure we should be able to install microbots in python 3.13 and above. Tell me what changes do I have to do make it happen

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