Kotlin 2.1.20. Separate CI job

Author: turansky

.github/workflows/ci-K2120.yml

@@ -0,0 +1,48 @@
+name: CI-K2.1.20
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Validate Gradle Wrapper
+        uses: gradle/actions/wrapper-validation@v4
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'zulu'
+          java-version: '21'
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v4
+      - name: Build
+        run: |
+          ./gradlew build -Pkotlin.version=2.1.20-Beta1
+
+  build-examples:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Validate Gradle Wrapper
+        uses: gradle/actions/wrapper-validation@v4
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'zulu'
+          java-version: '21'
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v4
+      - name: Build Examples
+        run: |
+          ./gradlew publishToMavenLocal -Pkotlin.version=2.1.20-Beta1
+          cd examples/
+          ./gradlew build -Pkotlin.version=2.1.0-RC2  -Pseskar.version=3.50.1