Fix ConcurrentModificationException in coverage report generation

Problem:
Running tests and coverage report generation as separate Gradle invocations
caused a ConcurrentModificationException when Kover tried to access test
execution data:
  Could not determine the dependencies of task ':app:koverGenerateArtifactStandardDebug'
  > java.util.ConcurrentModificationException (no error message)

Root Cause:
- Configuration cache is enabled (improves build performance)
- Kover's coverage tasks need test execution data from the same Gradle session
- Separate invocations = separate Gradle daemon sessions
- Coverage report task cannot access test data from previous invocation
- Configuration cache + separate invocations = state corruption

Solution:
Combine test execution and coverage generation into single Gradle command:
  BEFORE: ./gradlew :app:testStandardDebug
          ./gradlew :app:koverXmlReportStandardDebug  # Fails!

  AFTER:  ./gradlew :app:testStandardDebug :app:koverXmlReportStandardDebug

Benefits:
- Both tasks run in same Gradle daemon session
- Coverage task has access to test execution data
- Configuration cache works correctly
- No state corruption between invocations

Applied to all test jobs:
- test-libraries: Combined 6 test + 6 coverage tasks
- test-app: Combined test + coverage
- test-authenticator: Combined test + coverage

.github/workflows/test.yml

@@ -107,17 +107,17 @@ jobs:
           distribution: "temurin"
           java-version: ${{ env._JAVA_VERSION }}
 
-      - name: Test library modules
+      - name: Test library modules and generate coverage
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
-          ./gradlew :core:testDebug :data:testDebug :network:testDebug :ui:testDebug :authenticatorbridge:testDebug :cxf:testDebug
-
-      - name: Generate library coverage reports
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: |
-          ./gradlew :core:koverXmlReportDebug :data:koverXmlReportDebug :network:koverXmlReportDebug :ui:koverXmlReportDebug :authenticatorbridge:koverXmlReportDebug :cxf:koverXmlReportDebug
+          ./gradlew \
+            :core:testDebug :core:koverXmlReportDebug \
+            :data:testDebug :data:koverXmlReportDebug \
+            :network:testDebug :network:koverXmlReportDebug \
+            :ui:testDebug :ui:koverXmlReportDebug \
+            :authenticatorbridge:testDebug :authenticatorbridge:koverXmlReportDebug \
+            :cxf:testDebug :cxf:koverXmlReportDebug
 
       - name: Upload library test reports
         uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
@@ -185,15 +185,10 @@ jobs:
           distribution: "temurin"
           java-version: ${{ env._JAVA_VERSION }}
 
-      - name: Test app module
+      - name: Test app module and generate coverage
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: ./gradlew :app:testStandardDebug
-
-      - name: Generate app coverage report
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: ./gradlew :app:koverXmlReportStandardDebug
+        run: ./gradlew :app:testStandardDebug :app:koverXmlReportStandardDebug
 
       - name: Upload app test reports
         uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
@@ -249,15 +244,10 @@ jobs:
           distribution: "temurin"
           java-version: ${{ env._JAVA_VERSION }}
 
-      - name: Test authenticator module
+      - name: Test authenticator module and generate coverage
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: ./gradlew :authenticator:testDebug
-
-      - name: Generate authenticator coverage report
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: ./gradlew :authenticator:koverXmlReportDebug
+        run: ./gradlew :authenticator:testDebug :authenticator:koverXmlReportDebug
 
       - name: Upload authenticator test reports
         uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2