Release v26.1.0

[takaokouji]

Summary

• Update version to 26.1.0
• Add GitHub Actions release workflow for automatic releases on tag push
• Update README.md for speee fork

Changes

Version Update

• Updated lib/jsonapi/resources/version.rb to version 26.1.0

GitHub Actions Release Workflow

Added .github/workflows/release.yml that:

• Triggers on tag push (v*)
• Verifies version in code matches tag version
• Generates changelog from git history
• Creates GitHub Release automatically

README.md Updates

• Removed upstream-specific badges (Travis CI, Gem Version, Code Climate, Gitter)
• Updated fork URL to speee/jsonapi-resources
• Added both upstream and speee issue links for bug reporting
• Removed Rails 5 bug report template link (pointed to upstream)

After Merge

After this PR is merged, create and push the tag:

git checkout master
git pull
git tag v26.1.0
git push origin v26.1.0

This will trigger the release workflow and create a GitHub Release automatically.

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