fix: ARM64 build native compilation instead of cross-compilation

The linux-arm64 job runs on a native ARM64 runner, so cross-compilation
setup is not needed. Removed dpkg --add-architecture, cross-compiler,
and architecture-specific package suffixes. This fixes "held broken
packages" error during dependency installation.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

.gitea/workflows/release.yml

@@ -158,21 +158,14 @@ jobs:
           git checkout FETCH_HEAD
       - name: Install dependencies
         run: |
-          # Use cross-compilation (Docker too old for --platform flag)
-          dpkg --add-architecture arm64
+          # Native ARM64 build (no cross-compilation needed)
           apt-get update -qq && apt-get install -y -qq \
-            gcc-aarch64-linux-gnu \
-            libwebkit2gtk-4.1-dev:arm64 libssl-dev:arm64 libgtk-3-dev:arm64 \
-            libayatana-appindicator3-dev:arm64 librsvg2-dev:arm64 patchelf \
+            libwebkit2gtk-4.1-dev libssl-dev libgtk-3-dev \
+            libayatana-appindicator3-dev librsvg2-dev patchelf \
             pkg-config curl perl
           curl -fsSL https://deb.nodesource.com/setup_22.x | bash -
           apt-get install -y nodejs
       - name: Build
-        env:
-          CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER: aarch64-linux-gnu-gcc
-          PKG_CONFIG_SYSROOT_DIR: /
-          PKG_CONFIG_LIBDIR: /usr/lib/aarch64-linux-gnu/pkgconfig:/usr/share/pkgconfig
-          PKG_CONFIG_ALLOW_CROSS: "1"
         run: |
           npm ci --legacy-peer-deps
           rustup target add aarch64-unknown-linux-gnu