MNT: Update fsl/base version number

to 2303.4 [build 0] (automatic fsl-ci-rules)

meta.yaml

@@ -3,7 +3,7 @@
 # The git repository for this conda recipe is: https://git.fmrib.ox.ac.uk/fsl/conda/fsl-base.git
 
 {% set name       = 'fsl-base' %}
-{% set version    = '2303.3' %}
+{% set version    = '2303.4' %}
 {% set repository = 'https://git.fmrib.ox.ac.uk/fsl/base.git' %}
 {% set build      = '0' %}