Update package.py to be compatible with python 3.8

packages/apbs/package.py

@@ -31,7 +31,7 @@ class Apbs(CMakePackage):
 
     # Dependencies.
     depends_on('cmake@3.19', type='build')
-    depends_on('python@3.9:3.10', type=('build'))
+    depends_on('python@3.8:3.10', type=('build'))
     depends_on('blas', type='build')
     depends_on('suite-sparse', type='build')
     depends_on('maloc', type='build')
@@ -40,7 +40,7 @@ class Apbs(CMakePackage):
         # Min and max Python versions need to be set as variables to pass tests.
         # See tests/CMakeLists.txt lines 6-14.
         args = [
-                '-DPYTHON_MIN_VERSION=3.9',
+                '-DPYTHON_MIN_VERSION=3.8',
                 '-DPYTHON_MAX_VERSION=3.10',
                 ]
         return args