Bump version to v2.6.0

[kolipakakondal]

Description

Bumped version to v2.6.0

Type of change

Please delete options that are not relevant.

• Release change

How has this been tested?

Verify generated artifacts version numbers this include espressif-ide, update site

Test Configuration:

• ESP-IDF Version: NA
• OS (Windows,Linux and macOS): NA

Dependent components impacted by this PR:

• Update site
• Installation

Checklist

• PR Self Reviewed
• Applied Code formatting
• Added Documentation
• Added Unit Test
• Verified on all platforms - Windows,Linux and macOS

[AndriiFilippov]

@kolipakakondal hi !

Tested under:
OS - Linux/MAcOS/Windows

MacOS log:

Operating System: mac os x
Java Runtime Version: 18.0.1.1+2-6
Eclipse Version: 4.24.0.v20220607-0700
Eclipse CDT Version: 10.7.0.202204131742
IDF Eclipse Plugin Version: 2.6.0.202207270913
Please use idf.py only in an ESP-IDF shell environment.
Python set for IDF_PYTHON_ENV: Python 3.8.9

Linux log:

Operating System: linux
Java Runtime Version: 18.0.1.1+2-6
Eclipse Version: 4.24.0.v20220607-0700
Eclipse CDT Version: 10.7.0.202204131742
IDF Eclipse Plugin Version: 2.6.0.202207271416
ESP-IDF v5.0-dev-4379-g36f49f361c
Python set for IDF_PYTHON_ENV: Python 3.10.4

Windows:

Operating System: windows 10
Java Runtime Version: 18.0.1.1+2-6
Eclipse Version: 4.24.0.v20220607-0700
Eclipse CDT Version: 10.7.0.202204131742
IDF Eclipse Plugin Version: 2.6.0.202207280901
ESP-IDF v5.0-dev-4487-g1ed5e5130e
Python set for IDF_PYTHON_ENV: Python 3.8.7

Also was able to update existing plugin with com.espressif.idf.update zip

LGTM