Update dependencies

.github/workflows/maven.yml

@@ -10,7 +10,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
     - name: Set up JDK 17
       uses: actions/setup-java@v3
       with:

.github/workflows/tagged_release.yaml

@@ -10,7 +10,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
     - run: |
         git fetch --no-tags --prune --depth=1 origin +refs/heads/*:refs/remotes/origin/*
     - name: Set up JDK 17

ch-covidcertificate-backend-config/pom.xml

@@ -25,7 +25,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 
-        <spring-boot-version>2.7.8</spring-boot-version>
+        <spring-boot-version>3.1.3</spring-boot-version>
         <spring-cloud-sleuth-version>3.1.6</spring-cloud-sleuth-version>
         <jackson-version>2.11.1</jackson-version>
         <jsonwebtoken-version>0.11.5</jsonwebtoken-version>
@@ -246,7 +246,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
-                <version>2.22.2</version>
+                <version>3.1.2</version>
                 <configuration>
                     <argLine>
                         --illegal-access=permit