CI: Configure workflows to run on 'workflow_dispatch' event

.github/workflows/cache_data.yaml

@@ -1,12 +1,16 @@
 # Cache GMT remote data files and upload as artifacts
 #
-# This workflow downloads data files needed by PyGMT tests/documentation from
-# the GMT data server and uploads as workflow artifacts which can be accessed
-# by other GitHub Actions workflows.
+# This workflow downloads data files needed by PyGMT tests/documentation from the GMT
+# data server and uploads them as workflow artifacts, which can then be accessed by other
+# GitHub Actions workflows.
 #
-# It is scheduled to run every Sunday at 12:00 (UTC). If new remote files are
-# needed urgently, maintainers can update the workflow file or the
-# 'pygmt/helpers/caching.py' file to refresh the cache.
+# It is scheduled to run every Sunday at 12:00 (UTC). If new remote files are needed
+# urgently, maintainers can refresh the cache by one of the following methods:
+#
+# 1. Update this workflow file
+# 2. Update the `pygmt/helpers/caching.py` file
+# 3. Go to https://github.com/GenericMappingTools/pygmt/actions/workflows/cache_data.yaml
+#    and click the "Run workflow" button
 #
 name: Cache data
 
@@ -16,6 +20,7 @@ on:
     paths:
       - 'pygmt/helpers/caching.py'
       - '.github/workflows/cache_data.yaml'
+  workflow_dispatch:
   # Schedule runs on 12 noon every Sunday
   schedule:
     - cron: '0 12 * * 0'

.github/workflows/check-links.yml

@@ -10,6 +10,7 @@ name: Check Links
 on:
   # Uncomment the 'pull_request' line below to trigger the workflow in PR
   # pull_request:
+  workflow_dispatch:
   # Schedule runs on 12 noon every Sunday
   schedule:
     - cron: '0 12 * * 0'

.github/workflows/ci_docs.yml

@@ -34,6 +34,7 @@ on:
       - 'examples/**'
       - 'README.md'
       - '.github/workflows/ci_docs.yml'
+  workflow_dispatch:
   release:
     types:
       - published

.github/workflows/ci_doctests.yaml

@@ -9,6 +9,7 @@ on:
   # push:
   #   branches: [ main ]
   # pull_request:
+  workflow_dispatch:
   # Schedule weekly tests on Sunday
   schedule:
     - cron: '0 0 * * 0'

.github/workflows/ci_tests.yaml

@@ -33,6 +33,7 @@ on:
     paths:
       - 'pygmt/**'
       - '.github/workflows/ci_tests.yaml'
+  workflow_dispatch:
   release:
     types:
       - published

.github/workflows/ci_tests_dev.yaml

@@ -20,6 +20,7 @@ on:
     paths:
       - 'pygmt/**'
       - '.github/workflows/ci_tests_dev.yaml'
+  workflow_dispatch:
   # Schedule tests on Monday/Wednesday/Friday
   schedule:
     - cron: '0 0 * * 1,3,5'

.github/workflows/ci_tests_legacy.yaml

@@ -17,6 +17,7 @@ on:
     # paths:
     #  - 'pygmt/**'
     #  - '.github/workflows/ci_tests_legacy.yaml'
+  workflow_dispatch:
   # Schedule tests on Tuesday
   schedule:
     - cron: '0 0 * * 2'