Enable lockfile refresh on forks via workflow_dispatch (#22)

Author: rcomer

.github/workflows/refresh-lockfiles.yml

@@ -19,7 +19,7 @@ jobs:
   get_python_matrix:
     # Determines which Python versions should be included in the matrix used in
     # the gen_lockfiles job.
-    if: "github.repository_owner == 'SciTools'"
+    if: "github.repository_owner == 'SciTools' || github.event_name == 'workflow_dispatch'"
     runs-on: ubuntu-latest
     outputs:
       matrix: ${{ steps.get_py.outputs.matrix }}
@@ -31,7 +31,7 @@ jobs:
   gen_lockfiles:
     # This is a matrix job: it splits to create new lockfiles for each
     # of the CI test python versions.
-    if: "github.repository_owner == 'SciTools'"
+    if: "github.repository_owner == 'SciTools' || github.event_name == 'workflow_dispatch'"
     runs-on: ubuntu-latest
     needs: get_python_matrix
 
@@ -60,7 +60,7 @@ jobs:
     # Once the matrix job has completed all the lock files will have been
     # uploaded as artifacts.
     # Download the artifacts, add them to the repo, and create a PR.
-    if: "github.repository_owner == 'SciTools'"
+    if: "github.repository_owner == 'SciTools' || github.event_name == 'workflow_dispatch'"
     runs-on: ubuntu-latest
     needs: gen_lockfiles