java up

Author: yegor256

.github/workflows/codecov.yml

@@ -16,7 +16,7 @@ jobs:
       - uses: actions/setup-java@v5
         with:
           distribution: 'temurin'
-          java-version: 11
+          java-version: 21
       - uses: actions/cache@v5
         with:
           path: ~/.m2/repository

.github/workflows/site.yml

@@ -16,7 +16,7 @@ jobs:
       - uses: actions/setup-java@v5
         with:
           distribution: 'zulu'
-          java-version: 11
+          java-version: 21
       - uses: actions/cache@v5
         with:
           path: ~/.m2/repository