version label update

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
Patch bump to version 0.4.1-b26

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
Merge branch 'release/0.4.1-b26'

* release/0.4.1-b26:
  Patch bump to version 0.4.1-b26