Fix version mismatch in manual JAR installation instructions

[ruturajjadhav07]

Why?

The README for the Stripe Java library contains a version mismatch in the "Others → manual install" section.
While Maven and Gradle instructions use version 29.5.0, the manual JAR download section incorrectly references 29.0.0.
This update ensures consistency across all installation instructions, preventing confusion for users manually downloading the JAR.

What?

• Updated the Stripe JAR version in the manual installation instructions from 29.0.0 → 29.5.0
• Updated the corresponding Maven Central JAR download link to match 29.5.0
• Verified that Google Gson version (2.10.1) is consistent and compatible
• No changes to code examples or other sections

See Also

• Stripe Java 29.5.0 Maven Central
• Stripe Java repository README

[cla-assistant]

All committers have signed the CLA.

[cla-assistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[cla-assistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[helenye-stripe]

Hi, thank you for your fix! We've decided to close in favor of fixing at the source (our just command). #2064

[ruturajjadhav07]

Hi, thank you for your fix! We've decided to close in favor of fixing at the source (our just command). #2064

Thanks for the update! I see you've made the changes for version 29.5.0. Glad to see it’s been addressed. Appreciate the work you’ve done to keep everything consistent!