use mlugg/setup-zig action to install Zig instead of doing it manually

.github/actions/build/action.yml

@@ -5,12 +5,15 @@ inputs:
   targets:
     description: A comma-separated list of Rust targets.
     default: x86_64-unknown-linux-gnu,aarch64-unknown-linux-gnu,x86_64-pc-windows-gnu
+    required: true
   lint:
     description: A boolean indicating if linting (cargo-fmt, clippy) should be run
     default: true
+    required: true
   test:
     description: A boolean indicating if tests should be run
     default: true
+    required: true
 
 runs:
   using: composite

.github/actions/dependencies/action.yml

@@ -1,38 +1,18 @@
-name: Install cargo-zigbuild
-description: Installs cargo-zigbuild and its dependencies
+name: Install dependencies
+description: Installs Zig and cargo-zigbuild
 
 inputs:
   zig-version:
     description: Version of Zig to install
-    default: 0.14.1
 
 runs:
   using: composite
   steps:
 
     - name: Install Zig
-      shell: bash
-      # the `--transform` options are used to install Zig in the /usr/local/:
-      # */zig -> /usr/local/bin/zig
-      # */lib/ -> /usr/local/lib/zig/
-      # the rest is not really necessary, but for consistency:
-      # */doc/ -> /usr/local/share/doc/zig/
-      # */LICENSE -> /usr/local/share/doc/zig/copyright
-      # */README.md -> /usr/local/share/doc/zig/README.md
-      run: |
-        ZIG_VERSION="${{ inputs.zig-version }}"
-        [ "$RUNNER_ARCH" == "X64" ] && ZIG_ARCH="x86_64" || ZIG_ARCH="aarch64"
-        wget -q "https://ziglang.org/download/${ZIG_VERSION}/zig-${ZIG_ARCH}-linux-${ZIG_VERSION}.tar.xz" \
-          -O /tmp/zig.tar.xz
-
-        sudo tar -xJf /tmp/zig.tar.xz -C / \
-          --transform='s|^[^/]+/zig$|usr/local/bin/zig|x' \
-          --transform='s|^[^/]+/lib|usr/local/lib/zig|x' \
-          --transform='s|^[^/]+/doc|usr/local/share/doc/zig|x' \
-          --transform='s|^[^/]+/LICENSE$|usr/local/share/doc/zig/copyright|x' \
-          --transform='s|^[^/]+/README.md$|usr/local/share/doc/zig/README.md|x' \
-          --wildcards \
-          "*/"{zig,lib,doc,LICENSE,README.md}
+      uses: mlugg/setup-zig@v2
+      with:
+        version: ${{ inputs.zig-version }}
 
     - name: Install cargo-zigbuild
       shell: sh