build(deps): update dependency org.codehaus.mojo:animal-sniffer-annotations to v1.20 (#275)

Author: renovate-bot

pom.xml

@@ -68,7 +68,7 @@
  <gson.version>2.8.6</gson.version>
  <threeten.version>1.5.0</threeten.version>
  <javax.annotations.version>1.3.2</javax.annotations.version>
- <animal-sniffer.version>1.19</animal-sniffer.version>
+ <animal-sniffer.version>1.20</animal-sniffer.version>
  <iam.version>1.0.8</iam.version>
  <opencensus.version>0.28.0</opencensus.version>
  <findbugs.version>3.0.2</findbugs.version>