Strip binaries and shared libs in `bin/tools` to reduce size

[benz0li]

The following binaries and one shared lib can be reduces in size if stripped:

• bin/tools/dart-sass/sass (9.6 MB -> 4.8 MB)
• bin/tools/deno(86 MB -> 62 MB)
• bin/tools/deno_dom/libplugin.so (4.7 MB -> 1.3 MB)

ℹ️ bin/tools/esbuild (7.8 MB) and bin/tools/pandoc (78 MB) are already stripped.