SpringBoot SB 4.0.0-M3: springBootImage containers fails starting with ClassNotFoundException: org.springframework.boot.env.EnvironmentPostProcessor

To reproduce the problem, unzip the attached file (created using Spring Initializer):

SB4-M3-buildpack.zip

First, verify that the Spring Boot app starts as normal using:

./gradlew bootRun

Next, create an OCI image and try starting a container:

./gradlew bootBuildImage
docker run -it --rm demo:0.0.1-SNAPSHOT

The docker run command fails with the error:

java.lang.ClassNotFoundException: org.springframework.boot.env.EnvironmentPostProcessor

Seems like the class org.springframework.boot.env.EnvironmentPostProcessor has moved to the package org.springframework.boot since Spring Boot 4.0.0-M3?