GHA: Re-tar linux distro to remove FreeBSD tar headers coming from tycho embedded tar

.github/workflows/gh-hosted-eclipse-distro-build.yml

@@ -99,6 +99,12 @@ jobs:
           files=`ls spring-tool-suite-4*linux*.tar.gz`
           for file in $files
           do
+            echo "Re-archive using tar.gz on linux runner to remove LIBARCHIVE headers"
+            mkdir extracted
+            tar -xzvf $file --directory ./extracted
+            tar -czvf $file ./extracted 
+            rm -rf extracted
+          
             echo "Generate checksums for ${file}"
             shasum -a 256 $file > ${file}.sha256
             md5sum $file > ${file}.md5