Bump version to 1.2.7 and update changelog

change workflow

## [1.2.5] - 2026-01-23

- support win32-arm64

## [1.2.4] - 2026-01-09

### fixed:
- fix path resolution issue

update pasls

docs: Add changelog entry for version 1.2.2, documenting Lazarus proj…

…ect optimization.

## [1.2.1] - 2025-08-15

### add:
- Support for use lazbuild in Lazarus projects

Update CHANGELOG.md to include new features and fixes for version 1.2.0

## [1.1.9] - 2022-12-17

## add:
-  optimize clean up and build
## fixed:
-  can't rename symbol on version 1.1.8

## [1.1.8] - 2022-12-16

## add:
-  add error handle for client to avoid crashing
-  change maximumCompletions default to 50