Bump guava from 30.0-jre to 31.1-jre in /core#896

dependabot[bot] wants to merge 1 commit intomasterrobfrank/testcontainers-java:masterfrom

dependabot/gradle/core/com.google.guava-guava-31.1-jrerobfrank/testcontainers-java:dependabot/gradle/core/com.google.guava-guava-31.1-jreCopy head branch name to clipboard