correct logging of the difference between source and target

* Results of comparing Environments diffable target .. with source .. is `[object Object]`

change-type: patch

lib/plugins/diffable.js

@@ -83,7 +83,7 @@ module.exports = class Diffable extends ErrorStash {
         const mergeDeep = new MergeDeep(this.log, this.github, ignorableFields)
         const compare = mergeDeep.compareDeep(existingRecords, filteredEntries)
         const results = { msg: 'Changes found', additions: compare.additions, modifications: compare.modifications, deletions: compare.deletions }
-        this.log.debug(`Results of comparing ${this.constructor.name} diffable target ${JSON.stringify(existingRecords)} with source ${JSON.stringify(filteredEntries)} is ${results}`)
+        this.log.debug(`Results of comparing ${this.constructor.name} diffable target ${JSON.stringify(existingRecords)} with source ${JSON.stringify(filteredEntries)} is ${JSON.stringify(results)}`)
         if (!compare.hasChanges) {
           this.log.debug(`There are no changes for ${this.constructor.name} for repo ${this.repo}. Skipping changes`)
           return Promise.resolve()