Bump graalvm/setup-graalvm from 1.6.4 to 1.6.6

Bumps [graalvm/setup-graalvm](https://github.com/graalvm/setup-graalvm) from 1.6.4 to 1.6.6.
- [Release notes](https://github.com/graalvm/setup-graalvm/releases)
- [Commits](graalvm/setup-graalvm@5298d94...0426e2e)

---
updated-dependencies:
- dependency-name: graalvm/setup-graalvm
  dependency-version: 1.6.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -138,7 +138,7 @@ jobs:
           java-version: '21'
 
       - name: Install GraalVM 25 for the image
-        uses: graalvm/setup-graalvm@5298d94fb55a4f185c602eeac5de1b553882abe2 # v1.6.4
+        uses: graalvm/setup-graalvm@0426e2e191540e8514dff98dc52a5f5146a2a276 # v1.6.6
         with:
           java-version: '25'
           distribution: 'graalvm-community'

.github/workflows/release.yml

@@ -110,7 +110,7 @@ jobs:
           java-version: '21'
 
       - name: Install GraalVM 25 for the image
-        uses: graalvm/setup-graalvm@5298d94fb55a4f185c602eeac5de1b553882abe2 # v1.6.4
+        uses: graalvm/setup-graalvm@0426e2e191540e8514dff98dc52a5f5146a2a276 # v1.6.6
         with:
           java-version: '25'
           distribution: 'graalvm-community'