GHA fixups due to security policy

Author: hobu

.github/workflows/build.yml

@@ -23,7 +23,7 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - uses: goanpeca/setup-miniconda@v1
+    - uses: conda-incubator/setup-miniconda@v2
       with:
         auto-update-conda: true
         python-version: ${{ matrix.python-version }}
@@ -71,7 +71,7 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - uses: goanpeca/setup-miniconda@v1.1.2
+    - uses: conda-incubator/setup-miniconda@v2
       with:
         channels: conda-forge
         auto-update-conda: true
@@ -119,7 +119,7 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - uses: goanpeca/setup-miniconda@v1.1.2
+    - uses: conda-incubator/setup-miniconda@v2
       with:
         channels: conda-forge
         auto-update-conda: true