Bump rxjava from 2.2.17 to 2.2.19

Bumps [rxjava](https://github.com/ReactiveX/RxJava) from 2.2.17 to 2.2.19.
- [Release notes](https://github.com/ReactiveX/RxJava/releases)
- [Changelog](https://github.com/ReactiveX/RxJava/blob/v2.2.19/CHANGES.md)
- [Commits](ReactiveX/RxJava@v2.2.17...v2.2.19)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

modules/jooby-bom/pom.xml

@@ -101,7 +101,7 @@
   <redoc.version>2.0.0-rc.20</redoc.version>
   <rest-assured.version>4.3.0</rest-assured.version>
   <rocker.version>1.2.3</rocker.version>
-  <rxjava.version>2.2.17</rxjava.version>
+  <rxjava.version>2.2.19</rxjava.version>
   <slf4j.version>1.7.30</slf4j.version>
   <spring.version>5.2.5.RELEASE</spring.version>
   <stork-maven-plugin.version>3.0.0</stork-maven-plugin.version>

pom.xml

@@ -65,7 +65,7 @@
     <boringssl.version>2.0.27.Final</boringssl.version>
 
     <!-- Reactive -->
-    <rxjava.version>2.2.17</rxjava.version>
+    <rxjava.version>2.2.19</rxjava.version>
     <reactor.version>3.3.3.RELEASE</reactor.version>
 
     <!--OpenAPI-->