Use Spring dependency-management plugin in pricenode

This is in preparation for addressing log4j 2 zero day exploit described
at https://www.lunasec.io/docs/blog/log4j-zero-day/. See full details
in the next commit.

Bringing in the dependency-management plugin results in many changes to
our Gradle verification metadata file, but all are BOM / POM / Module
manifests. No additional jar or code dependencies have been whitelisted
with this change.

build.gradle

@@ -573,6 +573,8 @@ configure(project(':monitor')) {
 configure(project(':pricenode')) {
     apply plugin: "org.springframework.boot"
 
+    apply plugin: 'io.spring.dependency-management'
+
     mainClassName = 'bisq.price.Main'
 
     version = file("src/main/resources/version.txt").text.trim()