Update and expand benchmarks

[starksm64]

I was looking for the state of json parsers and wanted to benchmark QSON against the latest. This PR adds 3 more parser and 1 writer benchmarks.

• Add Jackson Blackbird test
• Add DSL-JSON test
• Add custom Jackson deserializer test
• Update to build under Java 25
• Update Gson, JMH versions

Output for a couple run on M1 Max Studio box:

starksm@Scotts-Mac-Studio benchmark % java --version
openjdk 25 2025-09-16 LTS
OpenJDK Runtime Environment Temurin-25+36 (build 25+36-LTS)
OpenJDK 64-Bit Server VM Temurin-25+36 (build 25+36-LTS, mixed mode, sharing)

# Run 1
starksm@Scotts-Mac-Studio benchmark % java -jar target/benchmarks.jar
...
# Run complete. Total time: 00:07:22

Benchmark                             Mode  Cnt       Score   Error  Units
MyBenchmark.testParserAfterburner    thrpt    2  500034.352          ops/s
MyBenchmark.testParserBlackbird      thrpt    2  495454.638          ops/s
MyBenchmark.testParserDslJson        thrpt    2  436869.282          ops/s
MyBenchmark.testParserGson           thrpt    2  255010.268          ops/s
MyBenchmark.testParserJackson        thrpt    2  453697.162          ops/s
MyBenchmark.testParserJacksonCustom  thrpt    2  526251.088          ops/s
MyBenchmark.testParserQson           thrpt    2  357736.241          ops/s
MyBenchmark.testWriterAfterburner    thrpt    2  472105.002          ops/s
MyBenchmark.testWriterBlackbird      thrpt    2  443798.296          ops/s
MyBenchmark.testWriterJackson        thrpt    2  376696.783          ops/s
MyBenchmark.testWriterQson           thrpt    2  916675.197          ops/s

# Run 2
starksm@Scotts-Mac-Studio benchmark % java -jar target/benchmarks.jar
...
# Run complete. Total time: 00:07:23

Benchmark                             Mode  Cnt       Score   Error  Units
MyBenchmark.testParserAfterburner    thrpt    2  494117.103          ops/s
MyBenchmark.testParserBlackbird      thrpt    2  501884.287          ops/s
MyBenchmark.testParserDslJson        thrpt    2  446400.870          ops/s
MyBenchmark.testParserGson           thrpt    2  261368.387          ops/s
MyBenchmark.testParserJackson        thrpt    2  454672.119          ops/s
MyBenchmark.testParserJacksonCustom  thrpt    2  526602.243          ops/s
MyBenchmark.testParserQson           thrpt    2  379997.685          ops/s
MyBenchmark.testWriterAfterburner    thrpt    2  470261.490          ops/s
MyBenchmark.testWriterBlackbird      thrpt    2  439389.472          ops/s
MyBenchmark.testWriterJackson        thrpt    2  381855.038          ops/s
MyBenchmark.testWriterQson           thrpt    2  995675.929          ops/s