ci: use mlugg/setup-zig@v2, and specify Zig version in build.zig.zon

This new release of setup-zig allows determining the version of Zig to
fetch based off of the `minimum_zig_version` specified in
`build.zig.zon`, which means we only need to specify it in one place
instead of three.

Author: mlugg

.github/workflows/CD.yml

@@ -17,9 +17,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
         with: { fetch-depth: 0 }
-      - uses: mlugg/setup-zig@v1
-        with:
-          version: 0.14.0
+      - uses: mlugg/setup-zig@v2
       - name: Build
         env:
           DEMO_SIGN_PUBKEY: ${{ secrets.SAR_DEMO_SIGN_PUBKEY }}

.github/workflows/CI.yml

@@ -29,9 +29,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
         with: { fetch-depth: 0 }
-      - uses: mlugg/setup-zig@v1
-        with:
-          version: 0.14.0
+      - uses: mlugg/setup-zig@v2
       - name: Build
         env:
           DEMO_SIGN_PUBKEY: ${{ secrets.SAR_DEMO_SIGN_PUBKEY }}

.github/workflows/CodeQL.yml

@@ -32,9 +32,7 @@ jobs:
       uses: actions/checkout@v4
 
     - name: Setup Zig Compiler
-      uses: mlugg/setup-zig@v1
-      with:
-        version: 0.14.0
+      uses: mlugg/setup-zig@v2
 
     - name: Initialize CodeQL
       uses: github/codeql-action/init@v3

build.zig.zon

@@ -2,6 +2,7 @@
     .name = .SourceAutoRecord,
     .fingerprint = 0x624553be3189c0f7,
     .version = "1.13.1",
+    .minimum_zig_version = "0.14.0",
     .paths = .{""},
     .dependencies = .{
         .x265 = .{