[StepSecurity] Apply security best practices

.github/dependabot.yml

@@ -0,0 +1,11 @@
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: daily
+
+  - package-ecosystem: cargo
+    directory: /
+    schedule:
+      interval: daily

.github/workflows/build-and-test.yml

@@ -29,7 +29,7 @@ jobs:
       CARGO_REGISTRIES_CRATES_IO_PROTOCOL: sparse
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
 
       # no_global_oom_handling is currently broken in 1.69: https://github.com/rust-lang/rust/pull/110649
       # So use 1.68 until it gets fixed.

.github/workflows/dependency-review.yml

@@ -0,0 +1,22 @@
+# Dependency Review Action
+#
+# This Action will scan dependency manifest files that change as part of a Pull Request,
+# surfacing known-vulnerable versions of the packages declared or updated in the PR.
+# Once installed, if the workflow run is marked as required,
+# PRs introducing known-vulnerable packages will be blocked from merging.
+#
+# Source repository: https://github.com/actions/dependency-review-action
+name: 'Dependency Review'
+on: [pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  dependency-review:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 'Checkout Repository'
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+      - name: 'Dependency Review'
+        uses: actions/dependency-review-action@0efb1d1d84fc9633afcdaad14c485cbbc90ef46c # v2.5.1

.github/workflows/publish.yml

@@ -5,13 +5,16 @@ on:
     tags:
       - '[v]?[0-9]+.[0-9]+.[0-9]+'
 
+permissions:
+  contents: read
+
 jobs:
   publish-cargo:
     name: Publishing to crates.io
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
 
       - run: cargo publish --locked
         env: