Fix the failures in the GitHub workflows

[nipunayf]

Purpose

The following changes are addressed with this PR:

1. Fixed the OOM issue when running multiple Ballerina test cases
2. Fixed the filename issues in Windows
3. Use the local language server core for the extended services
4. Bumped the library versions and updated the test cases

[Copilot]

Pull Request Overview

This PR fixes failures in GitHub workflows by addressing OOM issues in Ballerina tests, resolving filename issues on Windows, switching to the local language server core for extended services, and updating various dependency versions and test cases.

• Explicit null assignments have been introduced after shutting down the language server to ensure cleanup.
• Multiple build and configuration files have been updated to use project dependencies for langserver components and new library versions.
• Minor adjustments in test utility methods now use getPath instead of getCanonicalPath to resolve Windows filename issues.

Reviewed Changes

Copilot reviewed 66 out of 66 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
langserver-core/src/test/java/org/ballerinalang/langserver/diagnostics/DiagnosticsTest.java	Added null assignment to serviceEndpoint after shutdown for cleanup consistency
langserver-core/src/test/java/org/ballerinalang/langserver/diagnostics/CyclicDependenciesTest.java	Refactored instance variable initialization using @BeforeClass and @afterclass
langserver-core/src/test/java/org/ballerinalang/langserver/definition/DefinitionTest.java	Replaced getCanonicalPath with getPath to address Windows filename issues
langserver-core/src/test/java/org/ballerinalang/langserver/command/AbstractCommandExecutionTest.java	Added null assignment for serviceEndpoint post shutdown
langserver-core/src/test/java/org/ballerinalang/langserver/codelenses/CodeLensTest.java	Consistent cleanup of serviceEndpoint is applied
Multiple build.gradle and gradle.properties files	Updated dependency declarations to use langserver-core and langserver-commons projects; bumped version numbers
.github/workflows/pull-request.yml	Enabled long paths for Git to better support Windows file handling
.gitattributes	Standardized end-of-line configuration for Java files
Various JSON test config files	Updated version numbers and packageInfo fields to reflect new library versions
flow-model-generator modules	Adjusted module dependencies and added a TODO in test skip lists for investigation on GitHub Actions

Comments suppressed due to low confidence (3)

flow-model-generator/modules/flow-model-generator-ls-extension/src/test/java/io/ballerina/flowmodelgenerator/extension/SearchTest.java:70

• [nitpick] Consider linking this TODO to a tracking issue for improved clarity and management of the failing test.

// TODO: Investigate why this test fails on Github Actions

langserver-core/src/test/java/org/ballerinalang/langserver/definition/DefinitionTest.java:205

• Replacing getCanonicalPath with getPath may yield different path resolutions; please ensure this change resolves Windows filename issues without unintended side effects.

item.addProperty("uri", expectedPath.toFile().getPath());

langserver-core/src/test/java/org/ballerinalang/langserver/definition/DefinitionTest.java:265

• Switching to getPath can alter path normalization behavior; please verify that the intended file path format is maintained consistently across environments.

item.addProperty("uri", new File(canonicalPath).getPath());