chore(deps): update graalvm/setup-graalvm action to v1.2.6 (#973)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/gradle.yml

@@ -45,7 +45,7 @@ jobs:
           fetch-depth: 0
 
       - name: "🔧 Setup GraalVM CE"
-        uses: graalvm/setup-graalvm@v1.2.5
+        uses: graalvm/setup-graalvm@v1.2.6
         with:
           distribution: 'graalvm'
           java-version: ${{ matrix.java }}