Excavator: Update open-source publishing plugins (#1253)

Author: svc-excavator-bot

build.gradle

@@ -8,7 +8,7 @@ buildscript {
         classpath 'com.palantir.jakartapackagealignment:jakarta-package-alignment:0.6.0'
         classpath 'com.palantir.gradle.jdks:gradle-jdks:0.69.0'
         classpath 'com.palantir.gradle.jdkslatest:gradle-jdks-latest:0.24.0'
-        classpath 'com.palantir.gradle.externalpublish:gradle-external-publish-plugin:1.26.0'
+        classpath 'com.palantir.gradle.externalpublish:gradle-external-publish-plugin:1.27.0'
         classpath 'com.palantir.gradle.failure-reports:gradle-failure-reports:1.18.0'
         classpath 'com.palantir.gradle.idea-configuration:gradle-idea-configuration:0.8.0'
         classpath 'com.palantir.baseline:gradle-baseline-java:6.69.0'