Linter fixes

Co-authored-by: David O'Sullivan <[email protected]>

Author: joushx

lib/java_buildpack/framework/dynatrace_one_agent.rb

@@ -198,7 +198,7 @@ def logstream?
       end
 
       def skip_errors?
-        credentials[SKIP_ERRORS] == "true"
+        credentials[SKIP_ERRORS] == 'true'
       end
 
       def enable_fips?