fix(release): Replace all assets with chinese mirrors

[lucasssvaz]

Description of Change

This pull request makes updates to the .github/scripts/on-release.sh script to improve consistency in URL handling and correct an issue in the upload logic for Chinese-specific pages. These changes ensure proper substitution of URLs and accurate references during the upload process.

Keeping it as draft until assets like this are available:
https://dl.espressif.cn/github_assets/earlephilhower/esp-quick-toolchain/releases/download/3.0.0-gnu12/aarch64-linux-gnu.mklittlefs-c41e51a.200706.tar.gz

URL handling improvements:

• Updated the sed command to simplify and generalize the substitution of github.com URLs with dl.espressif.cn/github_assets by removing the hardcoded espressif path segment. This change applies to both development and release package JSON files. (.github/scripts/on-release.shL345-R350)

Upload logic corrections:

• Fixed the git_safe_upload_to_pages calls for Chinese-specific pages ($PACKAGE_JSON_DEV_CN and $PACKAGE_JSON_REL_CN) to use the correct file references, ensuring that the appropriate content is uploaded. (.github/scripts/on-release.shL459-R466)

[github-actions]

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[Copilot]

Pull Request Overview

This PR updates our release process to use Chinese mirror assets and corrects the upload logic for Chinese-specific package files. The changes include:

• A more generic sed URL substitution in on-release.sh for both development and release package files.
• The addition of release_append_cn.py to append a “-cn” suffix to version strings.
• Updates to the installation documentation to guide Chinese users on manual updates.

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
docs/en/installing.rst	Updated instructions for Chinese users regarding package updates.
.github/scripts/release_append_cn.py	New script to append "-cn" to version strings in package JSONs.
.github/scripts/on-release.sh	Modified URL substitutions and upload calls to correctly refer to Chinese mirrors.

Comments suppressed due to low confidence (2)

.github/scripts/on-release.sh:345

• The updated sed command now applies a generic replacement for URLs; please ensure that this pattern does not unintentionally modify URL segments in contexts where only selective substitution is desired.

sed '0,/github\.com\//!s|github\.com/|dl.espressif.cn/github_assets/|g' "$OUTPUT_DIR/$PACKAGE_JSON_DEV" > "$OUTPUT_DIR/$PACKAGE_JSON_DEV_CN"

.github/scripts/release_append_cn.py:21

• [nitpick] The early return for objects with name 'dfu-util' effectively skips version modifications; consider verifying that no nested version entries under 'dfu-util' require appending the '-cn' suffix.

if obj.get("name") == "dfu-util":