fix(deps): update dependency com.diffplug.spotless:spotless-plugin-gradle to v7.1.0 (#723)

Co-authored-by: elastic-renovate-prod[bot] <174716857+elastic-renovate-prod[bot]@users.noreply.github.com>

Author: elastic-renovate-prod[bot]

gradle/libs.versions.toml

@@ -1,7 +1,7 @@
 [versions]
 shadow = "8.3.8"
 jib = "3.4.5"
-spotless = "7.0.4"
+spotless = "7.1.0"
 junit = "5.13.3"
 autoservice = "1.1.1"
 log4j2 = "2.25.0"