Patch to pybind11 to avoid issue with concat #361

Job	Run time
Indepth Tests (Debug, all libraries)	1m 27s
Indepth Tests (Debug, all libraries)	1m 27s
Indepth Tests (Debug, all libraries)	1m 27s
Indepth Tests (Debug, all libraries)	19m 43s
Test on stable (Debug)	9m 48s
Test on stable (Debug)	9m 48s
Test on stable (Debug)	9m 48s
Test on stable (Debug)	9m 44s
Indepth Tests (Debug, no libraries)	1m 29s
Indepth Tests (Debug, no libraries)	1m 29s
Indepth Tests (Debug, no libraries)	1m 29s
Indepth Tests (Debug, no libraries)	15m 51s
Test on stable (Release)	10m 2s
Test on stable (Release)	10m 2s
Test on stable (Release)	10m 2s
Test on stable (Release)	10m 7s
Indepth Tests (Release, all libraries)	1m 11s
Indepth Tests (Release, all libraries)	1m 11s
Indepth Tests (Release, all libraries)	1m 11s
Indepth Tests (Release, all libraries)	18m 51s
Test and Deploy on latest (Debug)	1m 18s
Test and Deploy on latest (Debug)	1m 18s
Test and Deploy on latest (Debug)	1m 18s
Test and Deploy on latest (Debug)	19m 38s
Test and Deploy on latest (Release)	1m 2s
Test and Deploy on latest (Release)	1m 2s
Test and Deploy on latest (Release)	1m 2s
Test and Deploy on latest (Release)	20m 18s
Indepth Tests (Release, no libraries)	1m 9s
Indepth Tests (Release, no libraries)	1s
Indepth Tests (Release, no libraries)	1s
Indepth Tests (Release, no libraries)	16m 19s
Email notification	5s
Email notification	6s
Email notification	3s
Email notification	2s
	3h 30m 49s

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