Upgrade Java in GitHub Actions

Author: ref-humbold

.github/workflows/build-and-test.yml

@@ -13,7 +13,7 @@ jobs:
 
       - uses: actions/setup-java@v4
         with:
-          java-version: 17
+          java-version: 21
           distribution: temurin
 
       - uses: gradle/actions/setup-gradle@v4

build.gradle

@@ -31,7 +31,7 @@ tasks.jar {
   manifest {
     attributes(
         'Built-By': project.vendor,
-        'Specification-Title': 'Algorithms\' Library',
+        'Specification-Title': 'Algorithms Library',
         'Specification-Version': project.specVersion,
         'Specification-Vendor': project.vendor,
         'Implementation-Title': project.mainPackage,