Add dependency management for Awaitility

Closes gh-18205

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

@@ -41,6 +41,7 @@
 		<aspectj.version>1.9.4</aspectj.version>
 		<assertj.version>3.13.2</assertj.version>
 		<atomikos.version>4.0.6</atomikos.version>
+		<awaitility.version>4.0.1</awaitility.version>
 		<bitronix.version>2.1.4</bitronix.version>
 		<byte-buddy.version>1.10.1</byte-buddy.version>
 		<caffeine.version>2.8.0</caffeine.version>
@@ -1977,6 +1978,26 @@
 				<artifactId>assertj-core</artifactId>
 				<version>${assertj.version}</version>
 			</dependency>
+			<dependency>
+				<groupId>org.awaitility</groupId>
+				<artifactId>awaitility</artifactId>
+				<version>${awaitility.version}</version>
+			</dependency>
+			<dependency>
+				<groupId>org.awaitility</groupId>
+				<artifactId>awaitility-groovy</artifactId>
+				<version>${awaitility.version}</version>
+			</dependency>
+			<dependency>
+				<groupId>org.awaitility</groupId>
+				<artifactId>awaitility-kotlin</artifactId>
+				<version>${awaitility.version}</version>
+			</dependency>
+			<dependency>
+				<groupId>org.awaitility</groupId>
+				<artifactId>awaitility-scala</artifactId>
+				<version>${awaitility.version}</version>
+			</dependency>
 			<dependency>
 				<groupId>org.codehaus.btm</groupId>
 				<artifactId>btm</artifactId>