build(deps): bump vendor/obsidian-plugin-library

Bumps the gitsubmodule group with 1 update: [vendor/obsidian-plugin-library](https://github.com/polyipseity/obsidian-plugin-library).


Updates `vendor/obsidian-plugin-library` from `312f7cd` to `eca4ec2`
- [Release notes](https://github.com/polyipseity/obsidian-plugin-library/releases)
- [Commits](polyipseity/obsidian-plugin-library@312f7cd...eca4ec2)

---
updated-dependencies:
- dependency-name: vendor/obsidian-plugin-library
  dependency-version: eca4ec299bc77e1251fc3a95dac3f3f33876acba
  dependency-type: direct:production
  dependency-group: gitsubmodule
...

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Author: dependabot[bot]