Vet some components through year's end

Their SCM changes a lot, and we don't want to worry about it for now.

Author: ctrueden

timestamps.txt

@@ -41,11 +41,11 @@ ome:formats-api 20181026000000
 ome:formats-bsd 20181026000000
 ome:formats-gpl 20181026000000
 org.apache.poi:poi 20181026000000
-org.apache.spark:spark-core_2.11 20181026000000
+org.apache.spark:spark-core_2.11 20181231000000
 org.janelia:H5J_Loader_Plugin 20180929000000
 org.javassist:javassist 20181026000000
-org.jetbrains.kotlin:kotlin-reflect 20181026000000
-org.jetbrains.kotlin:kotlin-stdlib-jdk8 20181026000000
+org.jetbrains.kotlin:kotlin-reflect 20181231000000
+org.jetbrains.kotlin:kotlin-stdlib-jdk8 20181231000000
 org.jmockit:jmockit 20190101120000
 org.mockito:mockito-core 20181026000000
 org.ojalgo:ojalgo 20181026000000
@@ -90,8 +90,8 @@ org.scijava:scripting-scala 20180701120000
 org.scijava:swing-checkbox-tree 20171225120000
 org.scijava:ui-behaviour 20180905120000
 org.scijava:vecmath 20180905120000
-org.tensorflow:proto 20181026000000
-org.tensorflow:tensorflow 20181026000000
+org.tensorflow:proto 20181231000000
+org.tensorflow:tensorflow 20181231000000
 sc.fiji:3D_Blob_Segmentation 20180905120000
 sc.fiji:3D_Objects_Counter 20180905120000
 sc.fiji:3D_Viewer 20180905120000