Update build.yaml

Author: HaydnTrigg

.github/workflows/build.yaml

@@ -148,7 +148,7 @@ jobs:
         uses: actions/checkout@v6
       - name: Install uv
         if: matrix.build == 'zigbuild'
-        uses: astral-sh/setup-uv@v8
+        uses: astral-sh/setup-uv@v8.1.0
       - name: Install cargo-zigbuild
         if: matrix.build == 'zigbuild'
         run: |
@@ -216,7 +216,7 @@ jobs:
         uses: actions/checkout@v6
       - name: Install uv
         if: matrix.build == 'zigbuild'
-        uses: astral-sh/setup-uv@v8
+        uses: astral-sh/setup-uv@v8.1.0
       - name: Install cargo-zigbuild
         if: matrix.build == 'zigbuild'
         run: |