[Maven] Could not find com.raynigon.unit-api:spring-boot-core-starter:jar:3:0.9

Start with the minimal pom.xml reproduction in the issue and run mvn clean install using spring-boot-jpa-starter version 3.0.9. Inspect how the spring-boot-jpa-starter and spring-boot-core-starter artifacts and their dependencies are published, then verify that Maven can download them from Central without manually adding the plain classifier.

Describe the bug
Starting from version 3.0.9, some artifacts are published with the plain classifier (spring-boot-core-starter:jar, spring-boot-jpa-starter:jar).

Affected Versions
3.0.9, 4.0.0, 4.0.1

To Reproduce
Steps to reproduce the behavior:

1. Be sure to have installed maven 3.6.x or newer
2. Create a folder and put a file named pom.xml with the following content

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.alessiomatricardi</groupId>
    <artifactId>pom-test</artifactId>
    <version>1.0.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>com.raynigon.unit-api</groupId>
            <artifactId>spring-boot-jpa-starter</artifactId>
            <version>3.0.9</version>
        </dependency>
    </dependencies>

</project>

3. Launch mvn clean install command
4. Output is

The following artifacts could not be resolved: com.raynigon.unit-api:spring-boot-jpa-starter:jar:3.0.9, com.raynigon.unit-api:spring-boot-core-starter:jar:3.0.9: com.raynigon.unit-api:spring-boot-jpa-starter:jar:3.0.9 was not found in [https://repo.maven.apache.org/maven2](vscode-file://vscode-app/usr/share/code/resources/app/out/vs/code/electron-browser/workbench/workbench.html) during a previous attempt. This failure was cached in the local repository and resolution is not reattempted until the update interval of central has elapsed or updates are forced -> [Help 1]

Expected behavior
The dependency is correctly downloaded from Central

Additional context

1. Adding plain classifier to the dependency doesn't help because the next error will be related to the spring-boot-jpa-starter dependencies such as spring-boot-core-starter
2. The result of mvn --version is

Apache Maven 3.6.3 (Red Hat 3.6.3-22)
Maven home: /usr/share/maven
Java version: 21.0.10, vendor: Red Hat, Inc., runtime: /usr/lib/jvm/java-21-openjdk-21.0.10.0.7-1.el9.x86_64
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "5.14.0-611.34.1.el9_7.x86_64", arch: "amd64", family: "unix"