Install basemap-data manually in CI temporarily

Otherwise we have the problem that the final release 1.3.0 is still
not in PyPI and `pip` cannot resolve the installation of dependencies
using the release candidate wheel.

Author: molinav

.github/workflows/basemap-for-manylinux.yml

@@ -249,6 +249,7 @@ jobs:
       -
         name: Install package
         run: |
+          pip install "basemap-data == 1.3.0rc1"
           pip install ${{ env.PKGDIR }}/dist/*-manylinux1*.whl
       -
         name: Test package

.github/workflows/basemap-for-windows.yml

@@ -195,6 +195,7 @@ jobs:
       -
         name: Install package
         run: |
+          pip install "basemap-data == 1.3.0rc1"
           pip install (Get-Item ${{ env.PKGDIR }}/dist/*-win*.whl)
       -
         name: Test package

packages/basemap/requirements.txt

@@ -1,4 +1,4 @@
-basemap_data > 1.2, < 2.0
+basemap_data > 1.2, < 1.4
 
 six >= 1.10, < 1.16