Use lastest version of Java client API (#1478)

## Rationale
v8.0.0 was published

## Related Pull Requests
- LabKey/labkey-api-java#95

Author: labkey-adam

gradle.properties

@@ -45,7 +45,7 @@ buildFromSource=true
 # The default version for LabKey artifacts that are built or that we depend on.
 # override in an individual module's gradle.properties file as necessary 
 labkeyVersion=26.9-SNAPSHOT
-labkeyClientApiVersion=7.3.0
+labkeyClientApiVersion=8.0.0
 
 # Uncomment the following line to download proteomics binaries
 #includeProteomicsBinaries