ci: use 0.15.0 instead of 0.15.1 for setup-zig

Author: rdunnington

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: mlugg/setup-zig@v1
         with:
-          version: 0.15.1
+          version: 0.15.0
       - run: |
           zig build test
           zig build -Dtarget=x86-windows-gnu test
@@ -24,7 +24,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: mlugg/setup-zig@v1
         with:
-          version: 0.15.1
+          version: 0.15.0
         # Note that there's no testing for 32-bit on macos since offical support has been dropped
       - run: |
           zig build test
@@ -35,7 +35,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: mlugg/setup-zig@v1
         with:
-          version: 0.15.1
+          version: 0.15.0
       - run: |
           zig build test
           zig build -Dtarget=x86-linux-gnu test