Update "pyproject.toml" file.

Author: KelSolaar

pyproject.toml

@@ -46,7 +46,7 @@ exclude = [
 
 [tool.poetry.dependencies]
 python = "^3.6"
-colour-science = "^0.3.14"
+colour-science = "^0.3.16"
 opencv-python = "^4"
 
 biblib-simple = { version = "*", optional = true }  # Development dependency.
@@ -62,7 +62,7 @@ numpy = { version = "*", optional = true }
 pre-commit = { version = "*", optional = true }  # Development dependency.
 pytest = { version = "*", optional = true }  # Development dependency.
 restructuredtext-lint = { version = "*", optional = true }  # Development dependency.
-sphinx = { version = "*", optional = true }  # Development dependency.
+sphinx = { version = "<=3.1.2", optional = true }  # Development dependency.
 sphinx_rtd_theme = { version = "*", optional = true }  # Development dependency.
 sphinxcontrib-bibtex = { version = "*", optional = true }  # Development dependency.
 toml = { version = "*", optional = true }  # Development dependency.
@@ -82,7 +82,7 @@ nose = "*"
 pre-commit = "*"
 pytest = "*"
 restructuredtext-lint = "*"
-sphinx = "*"
+sphinx = "<=3.1.2"
 sphinx_rtd_theme = "*"
 sphinxcontrib-bibtex = "*"
 toml = "*"