Adapt GlobalObservationConvention imports

See micrometer-metrics/micrometer#3387

Author: bclozel

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/observation/ObservationAutoConfiguration.java

@@ -17,7 +17,7 @@
 package org.springframework.boot.actuate.autoconfigure.observation;
 
 import io.micrometer.core.instrument.MeterRegistry;
-import io.micrometer.observation.Observation.GlobalObservationConvention;
+import io.micrometer.observation.GlobalObservationConvention;
 import io.micrometer.observation.ObservationHandler;
 import io.micrometer.observation.ObservationPredicate;
 import io.micrometer.observation.ObservationRegistry;

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/observation/ObservationRegistryConfigurer.java

@@ -18,7 +18,7 @@
 
 import java.util.List;
 
-import io.micrometer.observation.Observation.GlobalObservationConvention;
+import io.micrometer.observation.GlobalObservationConvention;
 import io.micrometer.observation.ObservationHandler;
 import io.micrometer.observation.ObservationPredicate;
 import io.micrometer.observation.ObservationRegistry;

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/observation/ObservationRegistryPostProcessor.java

@@ -16,7 +16,7 @@
 
 package org.springframework.boot.actuate.autoconfigure.observation;
 
-import io.micrometer.observation.Observation.GlobalObservationConvention;
+import io.micrometer.observation.GlobalObservationConvention;
 import io.micrometer.observation.ObservationHandler;
 import io.micrometer.observation.ObservationPredicate;
 import io.micrometer.observation.ObservationRegistry;

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/observation/ObservationAutoConfigurationTests.java

@@ -24,9 +24,9 @@
 import io.micrometer.core.instrument.MeterRegistry;
 import io.micrometer.core.instrument.observation.MeterObservationHandler;
 import io.micrometer.core.instrument.search.MeterNotFoundException;
+import io.micrometer.observation.GlobalObservationConvention;
 import io.micrometer.observation.Observation;
 import io.micrometer.observation.Observation.Context;
-import io.micrometer.observation.Observation.GlobalObservationConvention;
 import io.micrometer.observation.ObservationHandler;
 import io.micrometer.observation.ObservationHandler.AllMatchingCompositeObservationHandler;
 import io.micrometer.observation.ObservationHandler.FirstMatchingCompositeObservationHandler;