Update test and CI dependencies. (#43)

Update the required pytest version for tests to `~=6.0`.

In the CI pipeline, manually install `aiida-core<1.6` and SQLAlchemy `<1.4`.

The `aiida-core` version is pinned due to `aiida-core` issue #4830, which
makes the tests hang.

The pinning of SQLAlchemy follows `aiida-core` PR #4809, which came
after the `1.5.2` release.

.ci/install_script.sh

@@ -6,6 +6,7 @@
 set -ev
 
 pip install -U pip wheel setuptools
+pip install 'aiida-core<1.6' 'sqlalchemy<1.4'
 
 case "$INSTALL_TYPE" in
     testing)

.github/workflows/ci.yml

@@ -5,6 +5,7 @@ on: [push, pull_request]
 jobs:
   docs:
     runs-on: ubuntu-latest
+    timeout-minutes: 10
     steps:
       - uses: actions/checkout@v1
       - uses: actions/cache@v2
@@ -31,6 +32,7 @@ jobs:
 
   pre-commit:
     runs-on: ubuntu-latest
+    timeout-minutes: 10
     steps:
       - uses: actions/checkout@v2
       - name: Cache python dependencies
@@ -53,6 +55,7 @@ jobs:
 
   tests:
     runs-on: ubuntu-latest
+    timeout-minutes: 20
     strategy:
       matrix:
         python-version: [3.7, 3.8]

setup.json

@@ -42,7 +42,7 @@
       "sphinxcontrib-details-directive"
     ],
     "testing": [
-      "pytest>=3.6",
+      "pytest~=6.0",
       "pytest-cov",
       "aiida-pytest>=0.1.0a8"
     ],