[CI] Use temurin instead of deprecated adopt

Author: valfirst

.github/workflows/test.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        distribution: [ 'zulu', 'adopt' ]
+        distribution: [ 'zulu', 'temurin' ]
         java: [8, 11, 13, 15]
       fail-fast: false
     name: JDK ${{ matrix.java }} (${{ matrix.distribution }})