blast_repo fixes (#82)

Dependabot
GitHub Action
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 430a85e..1603cdd 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -1,11 +1,9 @@
-# Set update schedule for GitHub Actions
-# See https://docs.github.com/en/free-pro-team@latest/github/administering-a-repository/keeping-your-actions-up-to-date-with-dependabot
-
+# Dependabot configuration file.
+# See https://docs.github.com/en/code-security/dependabot/dependabot-version-updates
 version: 2
-updates:
 
-- package-ecosystem: "github-actions"
-  directory: "/"
-  schedule:
-    # Check for updates to GitHub Actions every weekday
-    interval: "daily"
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "monthly"
diff --git a/.github/workflows/test-package.yml b/.github/workflows/test-package.yml
index 9de6d54..4e2ee9d 100644
--- a/.github/workflows/test-package.yml
+++ b/.github/workflows/test-package.yml
@@ -22,8 +22,8 @@
       matrix:
         sdk: [dev]
     steps:
-      - uses: actions/checkout@v3
-      - uses: dart-lang/setup-dart@v1
+      - uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8
+      - uses: dart-lang/setup-dart@6a218f2413a3e78e9087f638a238f6b40893203d
         with:
           sdk: ${{ matrix.sdk }}
       - id: install
@@ -49,8 +49,8 @@
         os: [ubuntu-latest]
         sdk: [2.14.0, dev]
     steps:
-      - uses: actions/checkout@v3
-      - uses: dart-lang/setup-dart@v1
+      - uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8
+      - uses: dart-lang/setup-dart@6a218f2413a3e78e9087f638a238f6b40893203d
         with:
           sdk: ${{ matrix.sdk }}
       - id: install