Bump future from 0.18.2 to 0.18.3 (#1970)

* Bump future from 0.18.2 to 0.18.3

Bumps [future](https://github.com/PythonCharmers/python-future) from 0.18.2 to 0.18.3.
- [Release notes](https://github.com/PythonCharmers/python-future/releases)
- [Changelog](https://github.com/PythonCharmers/python-future/blob/master/docs/changelog.rst)
- [Commits](https://github.com/PythonCharmers/python-future/compare/v0.18.2...v0.18.3)

---
updated-dependencies:
- dependency-name: future
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

* Update future==0.18.3

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: JonnyWong16 <9099342+JonnyWong16@users.noreply.github.com>

[skip ci]

lib/libfuturize/fixes/fix_print.py

@@ -57,6 +57,16 @@ class FixPrint(fixer_base.BaseFix):
         if args and args[-1] == Comma():
             args = args[:-1]
             end = " "
+
+            # try to determine if the string ends in a non-space whitespace character, in which
+            # case there should be no space at the end of the conversion
+            string_leaves = [leaf for leaf in args[-1].leaves() if leaf.type == token.STRING]
+            if (
+                string_leaves
+                and string_leaves[-1].value[0] != "r"  # "raw" string
+                and string_leaves[-1].value[-3:-1] in (r"\t", r"\n", r"\r")
+            ):
+                end = ""
         if args and args[0] == pytree.Leaf(token.RIGHTSHIFT, u">>"):
             assert len(args) >= 2
             file = args[1].clone()