Enable CI for Alpine (x64) (microsoft#4404)

[AgentService] - Migrate AgentService to .Net Framework 4.7.1 (micros…

…oft#4387)

* [AgentService] - Migrate AgentService to .Net Framework 4.8.1

- Migrate AgentService to .Net Framework 4.8.1
- changed pool from win-2019 to win-2022

* [AgentService] - Migrate AgentService to .Net Framework 4.8

- Migrate AgentService to .Net Framework 4.8

* [AgentService] - Migrate AgentService to .Net Framework 4.7.1

- Migrate AgentService to .Net Framework 4.7.1

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Co-authored-by: Kirill Ivlev <102740624+kirill-ivlev@users.noreply.github.com>
Co-authored-by: Denis Rumyantsev <mr.denis.rumyantsev@gmail.com>

fix detect rhel release (microsoft#4393)

WI 2048209 (microsoft#4367)

* Add disableInlineExecution

* Add parentheses for clarity

Add `AZP_AGENT_CLEANUP_PSMODULES_IN_POWERSHELL` agent knob (microsoft…

…#4360)

* add knob agent in pwsh

* rename knob

Support Node 20 handler (microsoft#4346)

* add node 20 handler

* update unit tests

Add disableInlineExecution (microsoft#4312)

Fix PH `modifyEnvironment` (microsoft#4287) (microsoft#4288)

* interim fix

* Correct args line

* Remove debug log

Co-authored-by: Konstantin Tyukalov <52399739+KonstantinTyukalov@users.noreply.github.com>

Update AgentKnobs.cs (microsoft#4286)

Fix PH telemetry debug formatting (microsoft#4282)

* Fix telemetry debug message

* Remove extra import

* Upd formatting