Updated the following JetBrains preconfigured base images to version 2026.x

## Change Change Updated the following[JetBrains preconfigured base images](https://cloud.google.com/workstations/docs/preconfigured-base-images#list%5Fof%5Fpreconfigured%5Fbase%5Fimages)to version 2026.x: * [CLion 2026.1](https://youtrack.jetbrains.com/articles/CPP-A-230654453/CLion-2026.1) * [GoLand 2026.2](https://youtrack.jetbrains.com/articles/GO-A-231736055/GoLand-2026.2) * [IntelliJ Ultimate 2026.1](https://youtrack.jetbrains.com/articles/IDEA-A-2100662608/IntelliJ-IDEA-2026.1-Latest-Builds) * [PhpStorm 2026.2](https://youtrack.jetbrains.com/articles/WI-A-231736318/PhpStorm-2026.2) * [WebStorm 2026.1](https://youtrack.jetbrains.com/articles/WEB-A-233538705/WebStorm-2026.1) * [RubyMine 2026.1](https://youtrack.jetbrains.com/articles/RUBY-A-220365320/RubyMine-2026.1) * [PyCharm 2026.1](https://youtrack.jetbrains.com/articles/PY-A-233538506/PyCharm-2026.1) * [Rider 2026.1](https://youtrack.jetbrains.com/issues?q=project:%20Rider%20%7B2026.1%7D)