CI: don't run GitHub Actions on fork or in cron job

Closes scipygh-12917

.github/workflows/bleedingedge.yml

@@ -6,8 +6,6 @@ on:
     branches: [ master ]
   pull_request:
     branches: [ master ]
-  schedule:
-    - cron:  '0 0 * * *'
 
 jobs:
   test_nightly:
@@ -21,6 +19,7 @@ jobs:
     - uses: actions/checkout@v2
 
     - name: Install Python 3.9
+      if: github.repository == 'scipy/scipy'
       if: matrix.python-version == '3.9'
       run: |
         sudo add-apt-repository ppa:deadsnakes/ppa
@@ -29,13 +28,16 @@ jobs:
         python3.9 -m pip install --upgrade pip setuptools
 
     - name: Install other build dependencies
+      if: github.repository == 'scipy/scipy'
       run: |
         sudo apt-get install libatlas-base-dev liblapack-dev gfortran libgmp-dev libmpfr-dev libsuitesparse-dev ccache libmpc-dev
 
     - name: Install packages
+      if: github.repository == 'scipy/scipy'
       run: |
         python3.9 -m pip install --user numpy setuptools wheel cython pytest pytest-xdist pybind11 pytest-xdist
 
     - name: Test SciPy
+      if: github.repository == 'scipy/scipy'
       run: |
         python3.9 -u runtests.py -m fast

.github/workflows/testing.yml

@@ -24,11 +24,13 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ matrix.python-version }}
+      if: github.repository == 'scipy/scipy'
       uses: actions/setup-python@v1
       with:
         python-version: ${{ matrix.python-version }}
 
     - name: Setup openblas
+      if: github.repository == 'scipy/scipy'
       run: |
         # this setup is originally taken from the .travis.yml
 
@@ -83,10 +85,12 @@ jobs:
         export PATH="$PATH:$PWD/openblas"
 
     - name: Install packages
+      if: github.repository == 'scipy/scipy'
       run: |
         pip install ${{ matrix.numpy-version }}
         pip install setuptools wheel cython gmpy2 pytest pytest-xdist pybind11 pytest-xdist mpmath scikit-umfpack scikit-sparse
 
     - name: Test SciPy
+      if: github.repository == 'scipy/scipy'
       run: |
         python -u runtests.py