.github/workflows/build.yml: use JDK 17

Author: alanorth

.github/workflows/build.yml

@@ -24,7 +24,7 @@ jobs:
           # NOTE: Unit Tests include deprecated REST API v6 (as it has unit tests)
           #  - surefire.rerunFailingTestsCount => try again for flakey tests, and keep track of/report on number of retries
           - type: "Unit Tests"
-            java: 11
+            java: 17
             mvnflags: "-DskipUnitTests=false -Pdspace-rest -Dsurefire.rerunFailingTestsCount=2"
             resultsdir: "**/target/surefire-reports/**"
           # NOTE: ITs skip all code validation checks, as they are already done by Unit Test job.
@@ -34,7 +34,7 @@ jobs:
           #  - xml.skip          => Skip all XML/XSLT validation by xml-maven-plugin
           #  - failsafe.rerunFailingTestsCount => try again for flakey tests, and keep track of/report on number of retries
           - type: "Integration Tests"
-            java: 11
+            java: 17
             mvnflags: "-DskipIntegrationTests=false -Denforcer.skip=true -Dcheckstyle.skip=true -Dlicense.skip=true -Dxml.skip=true -Dfailsafe.rerunFailingTestsCount=2"
             resultsdir: "**/target/failsafe-reports/**"
       # Do NOT exit immediately if one matrix job fails