builds on early Eclipse 2024-03 builds don't compile anymore

[martinlippert]

Error:  Failed to execute goal org.eclipse.tycho:tycho-compiler-plugin:4.0.4:compile (default-compile) on project org.springframework.ide.eclipse.boot: Compilation failure: Compilation failure: 
Error:  /home/runner/work/sts4/sts4/eclipse-extensions/org.springframework.ide.eclipse.boot/src/org/springframework/ide/eclipse/boot/core/initializr/InitializrService.java:[20] 
Error:  	import org.apache.maven.shared.utils.io.IOUtil;
Error:  	       ^^^^^^^^^^^^^^^^^^^^^^^
Error:  The import org.apache.maven.shared cannot be resolved
Error:  /home/runner/work/sts4/sts4/eclipse-extensions/org.springframework.ide.eclipse.boot/src/org/springframework/ide/eclipse/boot/core/initializr/InitializrService.java:[86] 
Error:  	return IOUtil.toString(urlConnection.getInputStream(), "UTF8");
Error:  	       ^^^^^^
Error:  IOUtil cannot be resolved
Error: [ERROR] 2 problems (2 errors)