[PL/TRM] Slightly relax tolerance for pressure

Failed on a Windows CI node with OpenMP.

ProcessLib/ThermoRichardsMechanics/Tests.cmake

@@ -213,7 +213,7 @@ AddTest(
     PointHeatSource_quarter_002_2nd_r_gt_2_ts_10_t_50000.000000.vtu PointHeatSource_quarter_002_2nd_r_gt_2_ts_10_t_50000.000000.vtu NodalForces NodalForces 4.3e-8 0
     # submesh residuum output quarter_002_2nd_r_lt_2
     PointHeatSource_quarter_002_2nd_r_lt_2_ts_10_t_50000.000000.vtu PointHeatSource_quarter_002_2nd_r_lt_2_ts_10_t_50000.000000.vtu displacement displacement 1e-15 0
-    PointHeatSource_quarter_002_2nd_r_lt_2_ts_10_t_50000.000000.vtu PointHeatSource_quarter_002_2nd_r_lt_2_ts_10_t_50000.000000.vtu pressure pressure 2.3e-7 0
+    PointHeatSource_quarter_002_2nd_r_lt_2_ts_10_t_50000.000000.vtu PointHeatSource_quarter_002_2nd_r_lt_2_ts_10_t_50000.000000.vtu pressure pressure 2.8e-7 0
     PointHeatSource_quarter_002_2nd_r_lt_2_ts_10_t_50000.000000.vtu PointHeatSource_quarter_002_2nd_r_lt_2_ts_10_t_50000.000000.vtu temperature temperature 2.2e-11 0
     PointHeatSource_quarter_002_2nd_r_lt_2_ts_10_t_50000.000000.vtu PointHeatSource_quarter_002_2nd_r_lt_2_ts_10_t_50000.000000.vtu epsilon epsilon 1e-15 0
     PointHeatSource_quarter_002_2nd_r_lt_2_ts_10_t_50000.000000.vtu PointHeatSource_quarter_002_2nd_r_lt_2_ts_10_t_50000.000000.vtu sigma sigma 1.1e-5 0