Update trufflehog.yml

Added copyright details

.github/workflows/trufflehog.yml

@@ -1,12 +1,33 @@
+#
+# Copyright (c) 2024 Contributors to the Eclipse Foundation
+#
+# See the NOTICE file(s) distributed with this work for additional
+# information regarding copyright ownership.
+#
+# This program and the accompanying materials are made available under the
+# terms of the Apache License, Version 2.0 which is available at
+# https://www.apache.org/licenses/LICENSE-2.0.
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
 name: "TruffleHog"
 
 on:
   push:
-    branches: [ main ]
+    branches: ["main"]
   pull_request:
-
+    # The branches below must be a subset of the branches above
+    branches: ["main"]
   schedule:
     - cron: "0 0 * * *" # Once a day
+  workflow_dispatch:
 
 permissions:
   actions: read
@@ -21,7 +42,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0  # Ensure full clone for pull request workflows
           ref: ${{ github.head_ref }}  # Fetch specific branch/commit for pull requests