updated cache to v4 and missing action to v4

Author: ryma2fhir

.github/workflows/masterfhirvalidation.yml

@@ -42,7 +42,7 @@ jobs:
           path: validation-service-fhir-r4
 
       - name: Cache Maven packages
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.m2
           key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}

.github/workflows/testingbranch.yml

@@ -17,7 +17,7 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: true