fix: Failure to use secure URL in Maven artifact upload/download (#1348)

Potential fix for
[https://github.com/eclipse-lsp4e/lsp4e/security/code-scanning/1](https://github.com/eclipse-lsp4e/lsp4e/security/code-scanning/1)

To fix the problem, change the `<url>` value under `<repository>` at
line 194 inside the `tycho-p2-plugin`'s `<baselineRepositories>`.
Specifically, update it from
`http://download.eclipse.org/lsp4e/snapshots` to
`https://download.eclipse.org/lsp4e/snapshots`. This ensures all
artifact downloads are performed over an encrypted channel, preventing
interception and tampering.
Only one line within the `<baselineRepositories>` block needs to be
edited. No other configuration changes, imports, or plugin modifications
are required.

---


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Author: sebthom

pom.xml

@@ -191,7 +191,7 @@
 					<configuration>
 						<baselineRepositories>
 							<repository>
-								<url>http://download.eclipse.org/lsp4e/snapshots</url>
+								<url>https://download.eclipse.org/lsp4e/snapshots</url>
 							</repository>
 						</baselineRepositories>
 					</configuration>