Correct external application properties load order

Fixes gh-24308

Author: mbhave

spring-boot-project/spring-boot-docs/src/docs/asciidoc/spring-boot-features.adoc

@@ -638,8 +638,8 @@ For example, if `spring.config.additional-location` is configured with the value
 . `optional:classpath:/`
 . `optional:classpath:/config/`
 . `optional:file:./`
-. `optional:file:./config/*/`
 . `optional:file:./config/`
+. `optional:file:./config/*/`
 . `optional:classpath:custom-config/`
 . `optional:file:./custom-config/`
 

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/config/ConfigDataEnvironment.java

@@ -90,8 +90,8 @@ class ConfigDataEnvironment {
 		locations.add(ConfigDataLocation.of("optional:classpath:/"));
 		locations.add(ConfigDataLocation.of("optional:classpath:/config/"));
 		locations.add(ConfigDataLocation.of("optional:file:./"));
-		locations.add(ConfigDataLocation.of("optional:file:./config/*/"));
 		locations.add(ConfigDataLocation.of("optional:file:./config/"));
+		locations.add(ConfigDataLocation.of("optional:file:./config/*/"));
 		DEFAULT_SEARCH_LOCATIONS = locations.toArray(new ConfigDataLocation[0]);
 	};