chore: Update version to 6.5.20.1 and add Lao translations

[dengzhongyuan365-dev]

• Updated version in linglong.yaml files to 6.5.20.1
• Added Lao translations in dde-calendar.desktop

Log: Version update and localization enhancement.

Summary by Sourcery

Update dde-calendar version to 6.5.20.1 and introduce Lao translations

Enhancements:

• Bump dde-calendar version to 6.5.20.1 in ARM64, Loong64, and generic manifests
• Add Lao language translations to dde-calendar.desktop

[github-actions]

TAG Bot

TAG: 6.5.20
EXISTED: no
DISTRIBUTION: unstable

[deepin-ci-robot]

deepin pr auto review

代码审查意见：

1. 版本更新：

   • 在arm64/linglong.yaml、calendar-client/assets/dde-calendar.desktop、linglong.yaml和loong64/linglong.yaml文件中，版本号从6.5.19.1更新到6.5.20.1。确认是否有对应的代码更新来支持这个版本号的变更。

2. 国际化字符串：

   • 在dde-calendar.desktop文件中添加了新的语言注释和通用名称（GenericName）和名称（Name）条目。确保这些新添加的字符串是正确翻译的，并且与现有字符串格式一致。

3. changelog文件：

   • 在debian/changelog文件中，版本号从6.5.19更新到6.5.20，并且添加了一条新的变更记录。确认这个变更记录是否准确反映了版本更新的内容。

4. 文件权限：

   • 在loong64/linglong.yaml文件中，文件权限从100755更改为100644。确认这个更改是否必要，并且不会影响文件的读取和执行权限。

5. 代码一致性：

   • 确保所有文件中的版本号和注释格式保持一致，以保持代码的整洁和可读性。

6. 注释和文档：

   • 在changelog文件中，添加的变更记录应该包含对版本更新的详细描述，以便其他开发者理解变更的上下文。

总体来说，这些更改看起来是合理的，但需要确保所有相关的代码和文档都已经更新以支持这些版本变更。

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

This PR updates the calendar app’s version to 6.5.20.1 across all package metadata files and enhances localization by adding Lao translations to the desktop entry.

File-Level Changes

Change	Details	Files
Bump package version to 6.5.20.1	Updated version from 6.5.19.1 to 6.5.20.1 in ARM64 metadata Updated version from 6.5.19.1 to 6.5.20.1 in generic metadata Updated version from 6.5.19.1 to 6.5.20.1 in Loong64 metadata	arm64/linglong.yaml linglong.yaml loong64/linglong.yaml
Add Lao translations to desktop entry	Inserted Name[lo] with Lao text Inserted Comment[lo] with Lao text	calendar-client/assets/dde-calendar.desktop

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[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: dengzhongyuan365-dev, lzwind

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