fix(release): use if/else for protoc install, add apt-get update for aarch64

[polaz]

Problem

Build embedded / aarch64 (ubuntu-latest) still fails in v1.0.2:

• aarch64 uses ghcr.io/rust-cross/manylinux_2_28-cross:aarch64 (Debian-based) → needs apt-get update before install
• The || chain in before-script also causes both dnf AND yum to run on x86_64 (yum=alias for dnf on AlmaLinux 8), then apt-get is tried and fails with 'command not found'

Fix

Replace || chain with if/else: check for dnf first (manylinux x86_64 = AlmaLinux 8), fall back to apt-get update && apt-get install (rust-cross aarch64 = Debian).

[coderabbitai]

⚠️ Possible Duplicate Issue(s)

• fix(release): handle missing dnf in aarch64 manylinux container #52

🔗 Related PRs

#53 - fix(release): handle missing dnf in aarch64 manylinux container [closed]

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