chore: add security scanning and pin actions

Author: mkajander

.github/dependabot.yml

@@ -0,0 +1,14 @@
+version: 2
+updates:
+  - package-ecosystem: "nuget"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    open-pull-requests-limit: 10
+
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    open-pull-requests-limit: 10
+

.github/workflows/ci.yml

@@ -8,17 +8,20 @@ on:
     branches:
       - main
 
+permissions:
+  contents: read
+
 jobs:
   build-test:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5
         with:
           fetch-depth: 0
 
       - name: Setup .NET
-        uses: actions/setup-dotnet@v4
+        uses: actions/setup-dotnet@67a3573c9a986a3f9c594539f4ab511d57bb3ce9
         with:
           dotnet-version: 8.0.x
 

.github/workflows/codeql.yml

@@ -0,0 +1,46 @@
+name: codeql
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+  schedule:
+    - cron: "0 3 * * 1"
+
+permissions:
+  actions: read
+  contents: read
+  security-events: write
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        language:
+          - csharp
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@67a3573c9a986a3f9c594539f4ab511d57bb3ce9
+        with:
+          dotnet-version: 8.0.x
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@b5ebac6f4c00c8ccddb7cdcd45fdb248329f808a
+        with:
+          languages: ${{ matrix.language }}
+
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@b5ebac6f4c00c8ccddb7cdcd45fdb248329f808a
+
+      - name: Analyze
+        uses: github/codeql-action/analyze@b5ebac6f4c00c8ccddb7cdcd45fdb248329f808a

.github/workflows/release.yml

@@ -14,12 +14,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5
         with:
           fetch-depth: 0
 
       - name: Setup .NET
-        uses: actions/setup-dotnet@v4
+        uses: actions/setup-dotnet@67a3573c9a986a3f9c594539f4ab511d57bb3ce9
         with:
           dotnet-version: 8.0.x
 
@@ -37,7 +37,7 @@ jobs:
 
       - name: NuGet login (Trusted Publishing / OIDC)
         id: nuget-login
-        uses: NuGet/login@v1
+        uses: NuGet/login@d22cc5f58ff5b88bf9bd452535b4335137e24544
         with:
           user: ${{ secrets.NUGET_USER }}
 

.github/workflows/trufflehog.yml

@@ -0,0 +1,30 @@
+name: trufflehog
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+  schedule:
+    - cron: "0 4 * * 1"
+  workflow_dispatch: {}
+
+permissions:
+  contents: read
+
+jobs:
+  scan:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5
+        with:
+          fetch-depth: 0
+
+      - name: TruffleHog
+        uses: trufflesecurity/trufflehog@6961f2bace57ab32b23b3ba40f8f420f6bc7e004
+        with:
+          version: "3.93.3"
+          extra_args: --results=verified,unknown