osslsigncode: rebuild (#2141)

It started to fail as below in the last 24 hours:
```
C:/msys64/mingw32/bin/osslsigncode.exe: error while loading shared libraries: ?: cannot open shared object file: No such file or directory
```

mingw-w64-osslsigncode/PKGBUILD

@@ -4,7 +4,7 @@ _realname=osslsigncode
 pkgbase=mingw-w64-${_realname}
 pkgname="${MINGW_PACKAGE_PREFIX}-${_realname}"
 pkgver=1.7.1
-pkgrel=1
+pkgrel=2
 pkgdesc="Tool for Authenticode signing of PE, CAB and MSI files (mingw-w64)"
 arch=('any')
 url="https://sourceforge.net/projects/osslsigncode/"