not work with jdk8

[jackxu2011]

Describe the bug
when use jdk8 run sync failed with error

 Execution sync of goal de.ingogriebsch.maven:sync-packagejson-version-maven-plugin:1.3.0:sync failed: An API incompatibility was encountered while executing de.ingogriebsch.maven:sync-packagejson-version-maven-plugin:1.3.0:sync: java.lang.NoSuchMethodError: java.util.Optional.orElseThrow()Ljava/lang/Object;

To Reproduce
Steps to reproduce the behavior:
run with jdk11 and jdk 17 is ok, but jdk8 error
config with maven

<plugin>
        <groupId>de.ingogriebsch.maven</groupId>
        <artifactId>sync-packagejson-version-maven-plugin</artifactId>
        <version>1.3.0</version>
        <executions>
          <execution>
            <id>sync</id>
            <goals>
              <goal>sync</goal>
            </goals>
            <phase>process-resources</phase>
          </execution>
        </executions>
      </plugin>

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

Environment:

• Maven version
  3.8.1
• Java version
  java version "1.8.0_333"
  Additional context
• Add any other context about the problem here.

[firone]

This plugins seems not compatible with java 8 at all.
I fixed one incompatibility but there is other problems : #189