Build: Upgrade to Gradle 7.5.1 (apache#5278)

See https://docs.gradle.org/7.5.1/release-notes.html

Upgraded by running the following command twice and manually
re-applying iceberg customizations:

./gradlew wrapper --gradle-version 7.5.1 --distribution-type bin

gradle/wrapper/gradle-wrapper.properties

@@ -1,7 +1,7 @@
 # checksum was taken from https://gradle.org/release-checksums
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=29e49b10984e585d8118b7d0bc452f944e386458df27371b49b4ac1dec4b7fda
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-bin.zip
+distributionSha256Sum=f6b8596b10cce501591e92f229816aa4046424f3b24d771751b06779d58c8ec4
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew

@@ -83,7 +83,7 @@ done
 APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
 
 if [ ! -e $APP_HOME/gradle/wrapper/gradle-wrapper.jar ]; then
-    curl -o $APP_HOME/gradle/wrapper/gradle-wrapper.jar https://raw.githubusercontent.com/gradle/gradle/v7.4.2/gradle/wrapper/gradle-wrapper.jar
+    curl -o $APP_HOME/gradle/wrapper/gradle-wrapper.jar https://raw.githubusercontent.com/gradle/gradle/v7.5.1/gradle/wrapper/gradle-wrapper.jar
 fi
 
 APP_NAME="Gradle"
@@ -209,6 +209,12 @@ set -- \
         org.gradle.wrapper.GradleWrapperMain \
         "$@"
 
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
 # Use "xargs" to parse quoted args.
 #
 # With -n1 it outputs one arg per line, with the quotes and backslashes removed.