Add Semgrep, Dependabot, and Snyk workflows

.github/dependabot.yml

@@ -0,0 +1,14 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"
+
+  - package-ecosystem: "gradle"
+    directory: "lib"
+    schedule:
+      interval: "daily"
+    ignore:
+      - dependency-name: "*"
+        update-types: ["version-update:semver-major"]

.github/workflows/semgrep.yml

@@ -1,23 +1,48 @@
 name: Semgrep
 
 on:
-  pull_request: {}
-
+  merge_group:
+  pull_request_target:
+    types:
+      - opened
+      - synchronize
   push:
-    branches: ["master", "main"]
-
+    branches:
+      - master
   schedule:
     - cron: '30 0 1,15 * *'
 
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}
+
 jobs:
-  semgrep:
-    name: Scan
+  authorize:
+    name: Authorize
+    environment: ${{ github.actor != 'dependabot[bot]' && github.event_name == 'pull_request_target' && github.event.pull_request.head.repo.full_name != github.repository && 'external' || 'internal' }}
     runs-on: ubuntu-latest
+    steps:
+      - run: true
+
+  run:
+    needs: authorize # Require approval before running on forked pull requests
+
+    name: Check for Vulnerabilities
+    runs-on: ubuntu-latest
+
     container:
       image: returntocorp/semgrep
-    if: (github.actor != 'dependabot[bot]')
+
     steps:
-      - uses: actions/checkout@v3
+      - if: github.actor == 'dependabot[bot]' || github.event_name == 'merge_group'
+        run: exit 0 # Skip unnecessary test runs for dependabot and merge queues. Artifically flag as successful, as this is a required check for branch protection.
+
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.sha || github.ref }}
 
       - run: semgrep ci
         env:

.github/workflows/snyk.yml

@@ -0,0 +1,47 @@
+name: Snyk
+
+on:
+  merge_group:
+  workflow_dispatch:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+  push:
+    branches:
+      - master
+  schedule:
+    - cron: '30 0 1,15 * *'
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}
+
+jobs:
+  authorize:
+    name: Authorize
+    environment: ${{ github.actor != 'dependabot[bot]' && github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name != github.repository && 'external' || 'internal' }}
+    runs-on: ubuntu-latest
+    steps:
+      - run: true
+
+  check:
+    needs: authorize
+
+    name: Check for Vulnerabilities
+    runs-on: ubuntu-latest
+
+    steps:
+      - if: github.actor == 'dependabot[bot]' || github.event_name == 'merge_group'
+        run: exit 0 # Skip unnecessary test runs for dependabot and merge queues. Artifically flag as successful, as this is a required check for branch protection.
+
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.sha || github.ref }}
+
+      - uses: snyk/actions/gradle-jdk11@b98d498629f1c368650224d6d212bf7dfa89e4bf # pin@0.4.0
+        env:
+          SNYK_TOKEN: ${{ secrets.SNYK_TOKEN }}

.snyk

@@ -0,0 +1,14 @@
+# Snyk (https://snyk.io) policy file, patches or ignores known vulnerabilities.
+version: v1.25.0
+# ignores vulnerabilities until expiry date; change duration by modifying expiry date
+ignore:
+  SNYK-JAVA-ORGJETBRAINSKOTLIN-2393744:
+    - '*':
+      reason: 'unaffected, only affects createTempFile and createTempDir kotlin function, which are not used'
+      expires: 2023-12-31T00:00:00.000Z
+  SNYK-JAVA-ORGBOUNCYCASTLE-5771339:
+    - '*':
+      reason: 'test-only dependency, no update available'
+      expires: 2023-12-31T00:00:00.000Z
+
+patch: {}

build.gradle

@@ -81,12 +81,21 @@ dependencies {
     implementation "com.auth0:java-jwt:4.4.0"
     implementation "net.jodah:failsafe:2.4.4"
 
-    testImplementation "org.bouncycastle:bcprov-jdk15on:1.68"
+    testImplementation "org.bouncycastle:bcprov-jdk15on:1.70"
     testImplementation "org.mockito:mockito-core:4.8.1"
     testImplementation "com.squareup.okhttp3:mockwebserver:${okhttpVersion}"
     testImplementation "org.hamcrest:hamcrest:${hamcrestVersion}"
     testImplementation "org.junit.jupiter:junit-jupiter-api:${jupiterVersion}"
     testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:${jupiterVersion}"
+
+    // Override MockWebServer's junit transitive dependency to latest v4
+    constraints {
+      testImplementation( group: 'junit', name: 'junit'){
+        version{
+          strictly "[4.13.2]"
+        }
+      }
+    }
 }
 
 // Creates a version.txt file containing the current version of the SDK.