chore: drop support for python 3.6 and 3.7 (#227)

Author: vascoalramos

.github/workflows/prerelease.yml

@@ -19,10 +19,10 @@ jobs:
       id: version
       run: echo ::set-output name=value::${GITHUB_REF#refs/*/}
 
-    - name: Setup Python 3.7
+    - name: Setup Python 3.8
       uses: actions/setup-python@v4
       with:
-        python-version: '3.7'
+        python-version: '3.8'
 
     - name: Install dependencies
       run: |

.github/workflows/pull_request.yml

@@ -15,10 +15,10 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
-    - name: Setup Python 3.7
+    - name: Setup Python 3.8
       uses: actions/setup-python@v4
       with:
-        python-version: '3.7'
+        python-version: '3.8'
 
     - name: Cache pip
       id: cache

setup.py

@@ -42,7 +42,7 @@
       keywords='data science ydata',
       url='https://github.com/ydataai/ydata-synthetic',
       license="https://github.com/ydataai/ydata-synthetic/blob/master/LICENSE",
-      python_requires=">=3.6, <3.11",
+      python_requires=">=3.8, <3.11",
       packages=find_namespace_packages('src'),
       package_dir={'':'src'},
       include_package_data=True,