feat: add Linux ARM64 build targets (gnu + musl) (npm#128)

* feat: add Linux ARM64 build targets (gnu + musl)

Add aarch64-unknown-linux-gnu and aarch64-unknown-linux-musl to
cargo-dist targets, enabling prebuilt binaries for ARM64 Linux
users via npm, the shell installer, and GitHub Releases.

* chore: trigger CLA recheck

Author: evan-choi

.changeset/add-linux-arm64-targets.md

@@ -0,0 +1,5 @@
+---
+"@googleworkspace/cli": minor
+---
+
+Add Linux ARM64 build targets (aarch64-unknown-linux-gnu and aarch64-unknown-linux-musl) to cargo-dist, enabling prebuilt binaries for ARM64 Linux users via npm, the shell installer, and GitHub Releases.

dist-workspace.toml

@@ -30,7 +30,7 @@ npm-scope = "@googleworkspace"
 github-attestations = true
 npm-package = "cli"
 # Target platforms to build apps for (Rust target-triple syntax)
-targets = ["aarch64-apple-darwin", "x86_64-apple-darwin", "x86_64-unknown-linux-gnu", "x86_64-pc-windows-msvc"]
+targets = ["aarch64-apple-darwin", "aarch64-unknown-linux-gnu", "aarch64-unknown-linux-musl", "x86_64-apple-darwin", "x86_64-unknown-linux-gnu", "x86_64-pc-windows-msvc"]
 # Which actions to run on pull requests
 pr-run-mode = "plan"
 # Don't overwrite release.yml on `cargo dist init` (preserves custom npm registry config)