fix(ci): test only on latest Noir

Author: olehmisar

.github/workflows/test.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        toolchain: [0.39.0, 1.0.0-beta.0, 1.0.0-beta.1, 1.0.0-beta.2]
+        toolchain: [1.0.0-beta.3]
     steps:
       - name: Checkout sources
         uses: actions/checkout@v4
@@ -36,7 +36,7 @@ jobs:
       - name: Install Nargo
         uses: noir-lang/[email protected]
         with:
-          toolchain: 1.0.0-beta.2
+          toolchain: 1.0.0-beta.3
 
       - name: Run formatter
         run: nargo fmt --check