remove older python versions

Author: Vahid Tavanashad

.github/workflows/conda-package.yml

@@ -29,7 +29,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12', '3.13']
+        python: ['3.13']
         os: [ubuntu-22.04, windows-2022]
 
     permissions:
@@ -126,7 +126,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12', '3.13']
+        python: ['3.13']
         os: [ubuntu-latest]
 
     env:
@@ -253,7 +253,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12', '3.13']
+        python: ['3.13']
         os: [windows-2022]
 
     env:
@@ -402,7 +402,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12', '3.13']
+        python: ['3.13']
         os: [ubuntu-22.04, windows-2022]
 
     runs-on: ${{ matrix.os }}