Partially upgrade to H2 database 2.0.206

Commit ed4e228 introduced support for H2 2.0.x but did not upgrade
the H2 dependency.

This commit upgrades the H2 dependency to version 2.0.206 but also
adds an explicit test dependency on version 1.4.200 in spring-r2dbc,
since r2dbc-h2 does not yet support H2 2.0.x.

Once r2dbc/r2dbc-h2#204 has been included in a
released version of r2dbc-h2 we will be able to upgrade spring-r2dbc's
test dependency on the H2 database to 2.0.x as well.

See spring-projectsgh-27870
See spring-projectsgh-27902

build.gradle

@@ -94,7 +94,7 @@ configure(allprojects) { project ->
 			dependency "org.ogce:xpp3:1.1.6"
 			dependency "org.yaml:snakeyaml:1.30"
 
-			dependency "com.h2database:h2:1.4.200"
+			dependency "com.h2database:h2:2.0.206"
 			dependency "com.github.ben-manes.caffeine:caffeine:2.9.3"
 			dependency "com.github.librepdf:openpdf:1.3.26"
 			dependency "com.rometools:rome:1.16.0"

spring-r2dbc/spring-r2dbc.gradle

@@ -17,6 +17,9 @@ dependencies {
 	testImplementation(testFixtures(project(":spring-context")))
 	testImplementation("io.projectreactor:reactor-test")
 	testImplementation("io.r2dbc:r2dbc-h2")
+	testImplementation("com.h2database:h2:1.4.200") {
+		because("r2dbc-h2 does not yet support H2 2.0")
+	}
 	testImplementation("io.r2dbc:r2dbc-spi-test:0.8.1.RELEASE") {
 		exclude group: "org.springframework", module: "spring-jdbc"
 	}