Fix typo + remove cmake warning.

Author: jdumas

.github/workflows/continuous.yml

@@ -142,7 +142,7 @@ jobs:
             -DLIBIGL_WITH_CGAL=ON ^
             -DLIBIGL_WITH_COMISO=OFF ^
             -DCMAKE_JOB_POOLS=pool-linking=1;pool-compilation=2 ^
-            -DCMAKE_JOB_POOL_COMPILE:STRING=pool-compilation' ^
+            -DCMAKE_JOB_POOL_COMPILE:STRING=pool-compilation ^
             -DCMAKE_JOB_POOL_LINK:STRING=pool-linking ^
             -B build ^
             -S .

.github/workflows/nightly.yml

@@ -179,7 +179,7 @@ jobs:
             -DLIBIGL_WITH_CGAL=ON ^
             -DLIBIGL_WITH_COMISO=OFF ^
             -DCMAKE_JOB_POOLS=pool-linking=1;pool-compilation=2 ^
-            -DCMAKE_JOB_POOL_COMPILE:STRING=pool-compilation' ^
+            -DCMAKE_JOB_POOL_COMPILE:STRING=pool-compilation ^
             -DCMAKE_JOB_POOL_LINK:STRING=pool-linking ^
             -B build ^
             -S .

cmake/DownloadProject.CMakeLists.cmake.in

@@ -1,7 +1,7 @@
 # Distributed under the OSI-approved MIT License.  See accompanying
 # file LICENSE or https://github.com/Crascit/DownloadProject for details.
 
-cmake_minimum_required(VERSION 2.8.2)
+cmake_minimum_required(VERSION 3.1)
 
 project(${DL_ARGS_PROJ}-download NONE)