MAINT: add pytest-timeout dependency — this should work around stuck CI jobs

Author: bsipocz

setup.cfg

@@ -44,6 +44,9 @@ text_file_format = rst
 xfail_strict = true
 remote_data_strict = true
 addopts = --color=yes --doctest-rst --doctest-continue-on-failure
+# Ideally this should be lower and individual, problematic tests and doc pages should have one-off higher numbers.
+timeout = 300
+
 filterwarnings =
     error
 # Remove along with astropy-helpers, once we switch to a new versioning scheme
@@ -145,12 +148,12 @@ install_requires=
    html5lib>=0.999
    keyring>=15.0
    pyvo>=1.5
-tests_require =
-   pytest-doctestplus>=0.13
-   pytest-astropy
 
 [options.extras_require]
 test=
+   pytest>=7.4
+   pytest-doctestplus>=1.4
+   pytest-timeout
    pytest-astropy
    matplotlib
    pytest-dependency