fix: RELEASING/Dockerfile.from_local_tarball to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-DEBIAN12-ZLIB-6008963
- https://snyk.io/vuln/SNYK-DEBIAN12-KRB5-1549480
- https://snyk.io/vuln/SNYK-DEBIAN12-KRB5-6277411
- https://snyk.io/vuln/SNYK-DEBIAN12-KRB5-6277412
- https://snyk.io/vuln/SNYK-DEBIAN12-KRB5-6277421

RELEASING/Dockerfile.from_local_tarball

@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-FROM python:3.10-slim-bookworm
+FROM python:3.14.0a3-slim-bookworm
 
 RUN useradd --user-group --create-home --no-log-init --shell /bin/bash superset