Use java dot file to help autobuild select the correct version

.github/workflows/codeql-analysis.yml

@@ -48,7 +48,7 @@ jobs:
         uses: actions/setup-java@v3
         with:
           distribution: 'temurin'
-          java-version: 19
+          java-version-file: '.java-version'
           cache: 'maven'
 
       # Auto build attempts to build any compiled languages  (C/C++, C#, or Java).

.github/workflows/maven.yml

@@ -33,7 +33,7 @@ jobs:
         uses: actions/setup-java@v3
         with:
           distribution: 'temurin'
-          java-version: 19
+          java-version-file: '.java-version'
           cache: 'maven'
 
       # Build and test (included in package)

.java-version

@@ -0,0 +1 @@
+19