latex template: fix for obscure hyperref/xelatex issue.

Here's a minimal case:

    \documentclass[]{article}
    \usepackage{hyperref}
    \begin{document}
    \section{\%á}
    \end{document}

Without this change, this fails on the second invocation of xelatex.
See https://tex.stackexchange.com/questions/313266/and-non-ascii-characters-in-headings

This affects inputs this like

    # %á

with pdf output via xelatex.

data/templates

@@ -1 +1 @@
-Subproject commit 1a62e83904c9dee869b0b2b33613e4c4c07977b3
+Subproject commit feffd7c64abab863abd3f6458d1c445d6bfe7fc4

tests/lhs-test.latex

@@ -21,8 +21,8 @@
 \usepackage{microtype}
 \UseMicrotypeSet[protrusion]{basicmath} % disable protrusion for tt fonts
 }{}
-\usepackage{hyperref}
-\hypersetup{unicode=true,
+\usepackage[unicode=true]{hyperref}
+\hypersetup{
             pdfborder={0 0 0},
             breaklinks=true}
 \urlstyle{same}  % don't use monospace font for urls

tests/lhs-test.latex+lhs

@@ -21,8 +21,8 @@
 \usepackage{microtype}
 \UseMicrotypeSet[protrusion]{basicmath} % disable protrusion for tt fonts
 }{}
-\usepackage{hyperref}
-\hypersetup{unicode=true,
+\usepackage[unicode=true]{hyperref}
+\hypersetup{
             pdfborder={0 0 0},
             breaklinks=true}
 \urlstyle{same}  % don't use monospace font for urls

tests/writer.latex

@@ -21,8 +21,8 @@
 \usepackage{microtype}
 \UseMicrotypeSet[protrusion]{basicmath} % disable protrusion for tt fonts
 }{}
-\usepackage{hyperref}
-\hypersetup{unicode=true,
+\usepackage[unicode=true]{hyperref}
+\hypersetup{
             pdftitle={Pandoc Test Suite},
             pdfauthor={John MacFarlane; Anonymous},
             pdfborder={0 0 0},

tests/writers-lang-and-dir.latex

@@ -21,8 +21,8 @@
 \usepackage{microtype}
 \UseMicrotypeSet[protrusion]{basicmath} % disable protrusion for tt fonts
 }{}
-\usepackage{hyperref}
-\hypersetup{unicode=true,
+\usepackage[unicode=true]{hyperref}
+\hypersetup{
             pdfborder={0 0 0},
             breaklinks=true}
 \urlstyle{same}  % don't use monospace font for urls