[newlib-cygwin] Cygwin: CI: Make sure pdflatex TeX format exists

[Jon TURNEY]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=544637b21b016138f86130a5cb4de8763e975a58

commit 544637b21b016138f86130a5cb4de8763e975a58
Author: Jon Turney <jon.turney@dronecode.org.uk>
Date:   Wed Jan 26 16:43:17 2022 +0000

    Cygwin: CI: Make sure pdflatex TeX format exists
    
    On Fedora, make sure the needed pdflatex TeX format exists after
    prerequisite installation, to avoid the output of mktexfmt during build.

Diff:
---
 .github/workflows/cygwin.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/cygwin.yml b/.github/workflows/cygwin.yml
index 7e73a360f..2f16c8c5a 100644
--- a/.github/workflows/cygwin.yml
+++ b/.github/workflows/cygwin.yml
@@ -37,6 +37,7 @@ jobs:
     # install doc tools
     - run: dnf install -y dblatex docbook2X docbook-xsl xmlto
     - run: dnf install -y python3 python3-lxml python3-ply
+    - run: fmtutil-sys --byfmt pdflatex && texhash
 
     # build
     - run: mkdir build install