fix: Update the root certificate for the BasicHttpsClient example

[a-grealish]

Description of Change

The example code was failing with a connection refused error. The hard-coded root certificate was not the one I found on the example URL. I've updated to the new certificate.

Tests scenarios

I've tested on a ESP32-S3-DevKitC-1 module.

[CLAassistant]

All committers have signed the CLA.

[github-actions]

	Messages
📖	You might consider squashing your 3 commits (simplifying branch history).

👋 Hello a-grealish, we appreciate your contribution to this project!

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[github-actions]

Test Results

 56 files   56 suites   5m 16s ⏱️
 21 tests  21 ✅ 0 💤 0 ❌
135 runs  135 ✅ 0 💤 0 ❌

Results for commit fab6dc8.

♻️ This comment has been updated with latest results.

[github-actions]

Memory usage test (comparing PR against master branch)

The table below shows the summary of memory usage change (decrease - increase) in bytes and percentage for each target.

Memory	FLASH [bytes]		FLASH [%]		RAM [bytes]		RAM [%]
Target	DEC	INC	DEC	INC	DEC	INC	DEC	INC
ESP32S3	0	0	0.00	0.00	0	0	0.00	0.00
ESP32S2	0	0	0.00	0.00	0	0	0.00	0.00
ESP32C3	0	0	0.00	0.00	0	0	0.00	0.00
ESP32C6	0	0	0.00	0.00	0	0	0.00	0.00
ESP32	0	0	0.00	0.00	0	0	0.00	0.00

Click to expand the detailed deltas report [usage change in BYTES]

Target	ESP32S3		ESP32S2		ESP32C3		ESP32C6		ESP32
Example	FLASH	RAM	FLASH	RAM	FLASH	RAM	FLASH	RAM	FLASH	RAM
HTTPClient/examples/BasicHttpsClient	-	-	-	-	-	-	-	-	-	-

[SuGlider]

The certification issue in the example BasicHttpsClient.ino is fixed by this PR.
Thanks @a-grealish, for the fix!

@me-no-dev - Please Merge it.