scripting: Fix linter warning in TmfScriptAnalysis

Rather than introducing a potentially non-API compliant external
annotation, suppress this previous SonarLint warning this way, for the
executeAnalysis method.

Change-Id: I28a795e540cc99fbb0ae8df864e4ac2c9790bab2
Signed-off-by: Marco Miller <marco.miller@ericsson.com>
Reviewed-on: https://git.eclipse.org/r/c/tracecompass.incubator/org.eclipse.tracecompass.incubator/+/197317
Tested-by: Trace Compass Bot <tracecompass-bot@eclipse.org>
Tested-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
Reviewed-by: Bernd Hufmann <bernd.hufmann@ericsson.com>

scripting/org.eclipse.tracecompass.incubator.scripting.core/src/org/eclipse/tracecompass/incubator/internal/scripting/core/analysis/TmfScriptAnalysis.java

@@ -75,6 +75,7 @@ private Path getStateSystemFolder() {
         return Objects.requireNonNull(Paths.get(suppDir, SUPP_FOLDER, STATE_SYSTEM_FOLDER));
     }
 
+    @SuppressWarnings("null")
     @Override
     protected boolean executeAnalysis(IProgressMonitor monitor) throws TmfAnalysisException {