Fix Redis version used for tests to 7.0.5-alpine

io.quarkus.redis.datasource.GeoCommandsTest.georadius and
io.quarkus.redis.datasource.GeoCommandsTest.georadiusUsingGeoPosition
are failing with:
java.lang.NumberFormatException: For input string: "0.00(1"
with the latest version.

It is either a bug in Redis or an issue in how we receive and decode
the data.

extensions/redis-client/runtime/src/test/java/io/quarkus/redis/datasource/DatasourceTestBase.java

@@ -22,7 +22,7 @@ public class DatasourceTestBase {
     public static RedisAPI api;
 
     static GenericContainer<?> server = new GenericContainer<>(
-            DockerImageName.parse(System.getProperty("redis.base.image", "redis:7-alpine")))
+            DockerImageName.parse(System.getProperty("redis.base.image", "redis:7.0.5-alpine")))
             .withExposedPorts(6379);
 
     @BeforeAll