Upgrade to Git Commit ID Maven Plugin 8.0.2

Closes gh-40015

Author: wilkinsona

spring-boot-project/spring-boot-dependencies/build.gradle

@@ -407,7 +407,7 @@ bom {
 				.formatted(version.toString("_")) }
 		}
 	}
-	library("Git Commit ID Maven Plugin", "6.0.0") {
+	library("Git Commit ID Maven Plugin", "8.0.2") {
 		group("io.github.git-commit-id") {
 			plugins = [
 				"git-commit-id-maven-plugin"

spring-boot-project/spring-boot-starters/spring-boot-starter-parent/build.gradle

@@ -148,7 +148,6 @@ publishing.publications.withType(MavenPublication) {
 							}
 							configuration {
 								delegate.verbose('true')
-								delegate.dateFormat("yyyy-MM-dd'T'HH:mm:ssXXX")
 								delegate.generateGitPropertiesFile('true')
 								delegate.generateGitPropertiesFilename('${project.build.outputDirectory}/git.properties')
 							}