Use Java 17 instead of 16 in build (#521 / #536)

Since this requires Gradle 7.3, this PR updates the Gradle wrapper
accordingly.

Closes: #521
PR: #536

.github/workflows/build.yml

@@ -117,7 +117,7 @@ jobs:
     timeout-minutes: 15
     strategy:
       matrix:
-        java: [ 8, 11, 16 ]
+        java: [ 8, 11, 17 ]
         junit-version: [ '5.7.2', '5.8.1' ]
         modular: [true, false]
         os: [ubuntu, macos, windows]
@@ -172,7 +172,7 @@ jobs:
         run: echo "JDK_EXPERIMENTAL=$JAVA_HOME" >> $GITHUB_ENV
       - uses: actions/setup-java@v2
         with:
-          java-version: 16
+          java-version: 17
           distribution: temurin
           cache: 'gradle'
       - name: Gradle toolchains

docs/cartesian-product.adoc

@@ -428,7 +428,7 @@ Basic bit test
 └─ 4 => first bit: 1 second bit: 1
 ----
 
-Please note that name is a https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/text/MessageFormat.html::[`MessageFormat`] pattern.
+Please note that name is a https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/text/MessageFormat.html::[`MessageFormat`] pattern.
 A single quote (') needs to be represented as a doubled single quote ('') in order to be displayed.
 
 `CartesianTest` supports the following placeholders in custom display names:

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.3-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists