Fix SendTelemetryHandler protocol error regex in check agent log

[maddieford]

Description

We ignore these errors in check agent log (up to 2 occurrences):
2024-08-31T08:13:23.198863Z ERROR SendTelemetryHandler ExtHandler Event: name=WALinuxAgent, op=ReportEventErrors, message=DroppedEventsCount: 1
Reasons (first 5 errors): [ProtocolError] [Wireserver Exception] [ProtocolError] [Wireserver Failed] URI http://168.63.129.16/machine?comp=telemetrydata [HTTP Failed] Status Code 400: Traceback (most recent call last):
File "bin/WALinuxAgent-9.9.9.9-py3.9.egg/azurelinuxagent/common/protocol/wire.py", line 567, in call_wireserver
raise ProtocolError(msg)
azurelinuxagent.common.exception.ProtocolError: [ProtocolError] [Wireserver Failed] URI http://168.63.129.16/machine?comp=telemetrydata [HTTP Failed] Status Code 400

Regex was not capturing this error. '/' characters need to be escaped

Issue #

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