Update standards version to 4.6.1, no changes needed.

Changes-By: lintian-brush
Fixes: lintian: out-of-date-standards-version
See-also: https://lintian.debian.org/tags/out-of-date-standards-version.html

debian/control

@@ -29,7 +29,7 @@ Build-Depends: debhelper-compat (= 13),
                libnss3-dev,
 Build-Depends-Indep: libglib2.0-doc,
                      libcairo2-doc
-Standards-Version: 4.6.0
+Standards-Version: 4.6.1
 Homepage: https://poppler.freedesktop.org/
 Vcs-Git: https://salsa.debian.org/freedesktop-team/poppler.git
 Vcs-Browser: https://salsa.debian.org/freedesktop-team/poppler