[Release Process] Set version number to 2.2.0-SNAPSHOT (#75)

Co-authored-by: larsk21 <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/ci.yml

@@ -11,15 +11,15 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.m2/repository
           key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
           restore-keys: ${{ runner.os }}-m2
       - name: Set up Java for publishing to Maven Central Repository
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
           java-version: 17

pom.xml

@@ -51,7 +51,7 @@
 		<xtext.version>2.30.0</xtext.version> <!-- https://central.sonatype.com/artifact/org.eclipse.xtext/org.eclipse.xtext.common.types/2.30.0 -->
 		<sdq.commons.version>2.2.0</sdq.commons.version> <!-- https://github.com/kit-sdq/SDQ-Commons -->
 		<sdq.xannotations.version>1.6.0</sdq.xannotations.version> <!-- https://github.com/kit-sdq/XAnnotations -->
-		<sdq.demometamodels.version>1.7.0</sdq.demometamodels.version> <!-- https://github.com/kit-sdq/DemoMetamodels -->
+		<sdq.demometamodels.version>1.9.0</sdq.demometamodels.version> <!-- https://github.com/kit-sdq/DemoMetamodels -->
 		<macos-jvm-swt-flags/> <!-- flag for SWT workaround on macOS -->
 		<maven.compiler.release>17</maven.compiler.release>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>