Upgrade to Reactor 2020.0.34 (and Tomcat 9.0.78)

Closes gh-30873

build.gradle

@@ -29,7 +29,7 @@ configure(allprojects) { project ->
 		imports {
 			mavenBom "com.fasterxml.jackson:jackson-bom:2.12.7"
 			mavenBom "io.netty:netty-bom:4.1.94.Final"
-			mavenBom "io.projectreactor:reactor-bom:2020.0.33"
+			mavenBom "io.projectreactor:reactor-bom:2020.0.34"
 			mavenBom "io.r2dbc:r2dbc-bom:Arabba-SR13"
 			mavenBom "io.rsocket:rsocket-bom:1.1.3"
 			mavenBom "org.eclipse.jetty:jetty-bom:9.4.51.v20230217"
@@ -128,14 +128,14 @@ configure(allprojects) { project ->
 			dependency "org.webjars:webjars-locator-core:0.48"
 			dependency "org.webjars:underscorejs:1.8.3"
 
-			dependencySet(group: 'org.apache.tomcat', version: '9.0.76') {
+			dependencySet(group: 'org.apache.tomcat', version: '9.0.78') {
 				entry 'tomcat-util'
 				entry('tomcat-websocket') {
 					exclude group: "org.apache.tomcat", name: "tomcat-servlet-api"
 					exclude group: "org.apache.tomcat", name: "tomcat-websocket-api"
 				}
 			}
-			dependencySet(group: 'org.apache.tomcat.embed', version: '9.0.76') {
+			dependencySet(group: 'org.apache.tomcat.embed', version: '9.0.78') {
 				entry 'tomcat-embed-core'
 				entry 'tomcat-embed-websocket'
 			}