fix timestamp filter

Signed-off-by: Sebastian Schüpbach <sebastian.schuepbach@unibas.ch>
3 jobs for master in 4 minutes and 46 seconds
Status Job ID Name Coverage
  Test
passed test-sbt #57252
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00:02:16

 
  Build
passed assembly-sbt #57253
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00:02:06

 
  Publish
passed build-latest-image #57254
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00:00:23