Use pre-release version of pack

Use pre-release pack to build images that use extensions

Signed-off-by: Aidan Delaney <[email protected]>

Author: AidanDelaney

.github/workflows/main.yml

@@ -26,7 +26,7 @@ jobs:
       - name: Install pack
         uses: buildpacks/github-actions/[email protected]
         with:
-          pack-version: '0.28.0'
+          pack-version: '0.30.0-pre3'
       - name: Test
         run: make test
         env: