Fix precision of var_bseries_score in regtest output

Author: singjc

tests/_regtest_outputs/test_pyprophet_score.test_osw_8.out

@@ -1,7 +1,7 @@
    level                          score      weight
 0    ms1           main_var_xcorr_shape  9.5599e-01
 1    ms2           main_var_xcorr_shape -2.5707e+00
-2    ms2              var_bseries_score  2.9013e-15
+2    ms2              var_bseries_score  2.9010e-15
 3    ms2              var_dotprod_score  4.8268e+00
 4    ms2            var_intensity_score  1.8417e+00
 5    ms1  var_isotope_correlation_score  9.9777e-02