Bump com.github.spullara.mustache.java:compiler from 0.9.11 to 0.9.12

Bumps [com.github.spullara.mustache.java:compiler](https://github.com/spullara/mustache.java) from 0.9.11 to 0.9.12.
- [Commits](spullara/mustache.java@mustache.java-0.9.11...mustache.java-0.9.12)

---
updated-dependencies:
- dependency-name: com.github.spullara.mustache.java:compiler
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

buildSrc/build.gradle

@@ -67,7 +67,7 @@ dependencies {
  implementation 'io.projectreactor:reactor-core:3.4.37'
  implementation 'com.apollographql.apollo:apollo-runtime:2.4.5'
  implementation 'com.github.ben-manes:gradle-versions-plugin:0.38.0'
- implementation 'com.github.spullara.mustache.java:compiler:0.9.11'
+ implementation 'com.github.spullara.mustache.java:compiler:0.9.12'
  implementation 'io.spring.javaformat:spring-javaformat-gradle-plugin:0.0.41'
  implementation 'io.spring.nohttp:nohttp-gradle:0.0.11'
  implementation 'net.sourceforge.htmlunit:htmlunit:2.37.0'