Remoev python 3.7 and 3.8 support

Author: Valeriy Mukhtarulin

.github/workflows/release-pypi.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        python-version: [3.7]
+        python-version: [3.9]
     steps:
       - uses: actions/checkout@v2
       - name: Set up Python ${{ matrix.python-version }}

.github/workflows/test.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.7, 3.8, 3.9, '3.10', 3.11, 3.12]
+        python-version: [3.8, 3.9, '3.10', 3.11, 3.12]
     steps:
       - uses: actions/checkout@v2
       - name: Set up Python ${{ matrix.python-version }}