Update 'pybind11' to v2.8.1 (#488)

Author: hjmallon

cmake/configs/default.cmake

@@ -456,7 +456,7 @@ hunter_default_version(protobuf-c VERSION 1.3.0-p1)
 hunter_default_version(pthread-stubs VERSION 0.4)
 hunter_default_version(pthreads-win32 VERSION 2.9.1-7ad2af7-p0)
 hunter_default_version(pugixml VERSION 1.10-p0)
-hunter_default_version(pybind11 VERSION 2.7.0)
+hunter_default_version(pybind11 VERSION 2.8.1)
 hunter_default_version(qhull VERSION 7.2.0-p1)
 hunter_default_version(quickjs VERSION 2020-04-12-p0)
 hunter_default_version(rabbitmq-c VERSION 0.10.0)

cmake/projects/pybind11/hunter.cmake

@@ -78,6 +78,12 @@ hunter_add_version(
     URL "https://github.com/pybind/pybind11/archive/v2.7.0.tar.gz"
     SHA1 "3a7010e5952c56e08c8f9b7d6fb458a173fd585a")
 
+hunter_add_version(
+    PACKAGE_NAME pybind11
+    VERSION "2.8.1"
+    URL "https://github.com/pybind/pybind11/archive/v2.8.1.tar.gz"
+    SHA1 "7b4431c10817e5e48e6ee4f0e5fecdbd85763dcd")
+
 hunter_cmake_args(pybind11 CMAKE_ARGS PYBIND11_TEST=OFF)
 
 hunter_pick_scheme(DEFAULT url_sha1_cmake)