Update dependency elixir to v1.20.3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
elixir (source)	tools	patch	1.20.2-otp-29 → 1.20.3

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Release Notes

elixir-lang/elixir (elixir)

v1.20.3

Compare Source

v1.20.2

Compare Source

1. Enhancements

Elixir

• [Kernel.ParallelCompiler] Include per-module type checking times when compiler profiling is enabled with profile: :time

2. Bug fixes

Elixir

• [Kernel] Fix binary comprehensions with sizes when options such as :uniq or :into are used
• [Kernel] Improve compiler error messages when quote with unquote is used inside a pattern or guard
• [Kernel] Restore the compiler optimization of Kernel.put_elem/3 to emit :erlang.setelement/3
• [Module] Fix type checking when applying an empty function type
• [Module] Fix type checking of bitstring patterns that reuse variables
• [Module] Fix type information for __info__(:struct) to include the :required key
• [Module] Fix type operations on map and optional keys during difference/intersection, including open keys and empty intersections
• [Module] Fix typing of list types involving dynamic or empty lists
• [Module] Include bitstrings as a possible domain key in the type system
• [Module] Preserve file metadata from each clause in type system warnings
• [Module] Fix type warnings for protocol implementations whose protocol module defines additional callbacks
• [Module] Raise clearer type checking errors when an expected struct is removed or redefined during compilation

Mix

• [mix compile] Avoid unnecessary umbrella recompilation when a path dependency's manifest is newer but unchanged
• [mix deps.compile] Recompile fetched dependencies when their compile-time environment changes

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[bbangert]

Pushed a fix-up commit: restored the -otp-29 build suffix renovate dropped (1.20.3 → 1.20.3-otp-29, matching our pinned erlang 29.0.3) and bumped the ELIXIR_VERSION pins in ci.yml and firmware-release.yml, which renovate doesn't track. Verified locally: mise installs Elixir 1.20.3 (compiled with Erlang/OTP 29) and the full suite passes (930 tests, 0 failures).

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