* Partially revert "replace deprecated ISO8601Utils with StdDateFormat (#17052)"
This partially reverts commit 76560e34c9aacd9d7593ac45bd204e2edf38abd9, namely anything
related to generators and samples using GSON instead of Jackson.
Changes to Jackson-only generation and generator-online regarding RFC3339DateFormat
are not being reverted.
* Test for default serialization library fallback
* Convert repetitive tests to parameterized test
* Add regression test for #18515
* [FEIGN] Only include <jackson-databind-version> property in pom.xml when required
* [RETROFIT2] Only include jackson-databind in gradle file when actually required
* [FEIGN] Don't include jackson dep's in sbt file when GSON is selected
* [FEIGN] Don't include jackson dep's in gradle file when GSON is selected
* DRY refactor JavaClientCodegen test code, increase readability
- use fluent assertions
- use helper method newTempFolder()
- use Java 9 static factory methods for maps
- don't declare variables that are only used once
- group declarations and usages
- use non-blocking java.nio.file API wherever possible
* Regenerate samples
* upgrade okhttp-gson and google-api-client to junit5
* add changes in StringUtilTest
* use https instead of http to fix 301 (moved) error
* revert petstore test server url to http://petstore.swagger.io and regenerate samples
* synced gradle/sbt/pom, re-generated samples
* revert removal of port 80 from test url
* udpate google api client tests
* update sha
* update comment
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Co-authored-by: Thorsten Hirsch <t.hirsch@web.de>
* Update Java version in Github actions
* Generate samples
* [java] Upgrade Gradle wrapper to 8.7
* Generate samples
* [Java] Add resttemplate-jakarta to CI
* Upgrade CI machines to ubuntu-2204:2024.04.4 which use Java 21
* Change CI machines to ubuntu-2204:2024.01.1 which use Java 17
* Change CI machines to ubuntu-2004:2024.01.1
* [ruby] Update Gemfile.locks
* Use gradle wrapper for samples-java-client-jdk17
