build(deps): bump log4j-slf4j18-impl from 2.15.0 to 2.16.0

Bumps log4j-slf4j18-impl from 2.15.0 to 2.16.0.

---
updated-dependencies:
- dependency-name: org.apache.logging.log4j:log4j-slf4j18-impl
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

spotbugs/build.gradle

@@ -85,7 +85,7 @@ dependencies {
   api 'org.apache.commons:commons-text:1.9'
   api 'org.slf4j:slf4j-api:1.8.0-beta4'
   implementation 'net.sf.saxon:Saxon-HE:10.6'
-  logBinding ('org.apache.logging.log4j:log4j-slf4j18-impl:2.15.0') {
+  logBinding ('org.apache.logging.log4j:log4j-slf4j18-impl:2.16.0') {
     exclude group: 'org.slf4j'
   }