Upgrade: lcalc 2.0.5 to allow building on Cygwin

[mkoeppe]

In Cygwin, building Sage 9.5.beta8 fails
while building lcalc 2.0.4.

See for instance github-actions run 4568970532
with our cygwin-standard configuration:

/usr/bin/bash ../../libtool  --tag=CXX   --mode=link g++ -std=gnu++11  -g -O2 -version-info 1:1:0 -L/opt/sage-676f077d2977748d2c17251384443b4059bee4a9/lib -Wl,-rpath,/opt/sage-676f077d2977748d2c17251384443b4059bee4a9/lib -L/opt/sage-676f077d2977748d2c17251384443b4059bee4a9/lib -Wl,-rpath,/opt/sage-676f077d2977748d2c17251384443b4059bee4a9/lib  -o libLfunction.la -rpath /opt/sage-676f077d2977748d2c17251384443b4059bee4a9/lib Ldokchitser.lo Lelliptic.lo Lgamma.lo Lglobals.lo Lmisc.lo Lnumbertheory.lo Lriemannsiegel.lo   -lpari 
libtool:   error: can't build x86_64-pc-cygwin shared library unless -no-undefined is specified
make[4]: *** [Makefile:472: libLfunction.la] Error 1

Here we upgrade to lcalc 2.0.5, which has the fix from

• https://gitlab.com/sagemath/lcalc/-/merge_requests/4

CC: @orlitzky @slel

Component: porting: Cygwin

Keywords: lcalc, upgrade

Author: Michael Orlitzky

Branch/Commit: a5a14ec

Reviewer: Matthias Koeppe

Issue created by migration from https://trac.sagemath.org/ticket/33043

[orlitzky]

Author: Michael Orlitzky

[orlitzky]

Commit: a5a14ec

[orlitzky]

New commits:

a5a14ec

Trac #33043: upgrade lcalc to v2.0.5.

[orlitzky]

Branch: u/mjo/ticket/33043

[mkoeppe]

Reviewer: Matthias Koeppe

[slel]

Changed keywords from none to lcalc, upgrade

[vbraun]

Changed branch from u/mjo/ticket/33043 to a5a14ec