Merge branch 'f-73-extern-adapt-to-conan-2-0' into 'dev'

.gitlab-ci.yml

CMakeLists.txt

HUMANS.md

Makefile

conanfile.py

doc/CHANGELOG.md

doc/Install_develop.rst

doc/requirements.txt

requirements.txt

src/caosdb/authentication.cpp

src/caosdb/connection.cpp

src/caosdb/entity.cpp

src/caosdb/logging.cpp

src/caosdb/utility.cpp

test/CMakeLists.txt

test/test_ccaosdb.cpp

test/test_configuration.cpp

test/test_connection.cpp

test/test_data_type.cpp

test/test_entity.cpp