Upgrade to Sendgrid 4.3.0

Closes gh-14864

Author: snicoll

spring-boot-project/spring-boot-dependencies/pom.xml

@@ -155,7 +155,7 @@
 		<rxjava2.version>2.2.2</rxjava2.version>
 		<selenium.version>3.14.0</selenium.version>
 		<selenium-htmlunit.version>2.33.0</selenium-htmlunit.version>
-		<sendgrid.version>4.2.1</sendgrid.version>
+		<sendgrid.version>4.3.0</sendgrid.version>
 		<servlet-api.version>4.0.1</servlet-api.version>
 		<slf4j.version>1.7.25</slf4j.version>
 		<snakeyaml.version>1.23</snakeyaml.version>