Drop Python 3.8 (#3980)

Ticket 151788

Author: Wovchena

.github/workflows/accuracy_checker.yml

@@ -6,7 +6,7 @@ jobs:
     strategy:
       matrix:
         runs-on: [ubuntu-20.04, ubuntu-22.04]
-        python-version: [3.8, 3.9, '3.10']
+        python-version: [3.9, '3.10']
     runs-on: ${{ matrix.runs-on }}
     steps:
       - uses: actions/checkout@v3

.github/workflows/model_api.yml

@@ -6,7 +6,7 @@ jobs:
     strategy:
       matrix:
         runs-on: [ubuntu-20.04, ubuntu-22.04]
-        python-version: [3.7, 3.8, 3.9, '3.10', '3.11']
+        python-version: [3.9, '3.10', '3.11', 3.12]
     runs-on: ${{ matrix.runs-on }}
     steps:
       - uses: actions/checkout@v3

demos/requirements.txt

@@ -1,6 +1,5 @@
 inflect>=5.3.0
 librosa>=0.8.0;python_version < '3.11'
-matplotlib>=3.3.4,<3.8
 pyparsing
 motmetrics>=1.2.0
 nibabel>=3.2.1

tools/accuracy_checker/setup.py

@@ -117,7 +117,7 @@ def prepare_requirements():
             "accuracy_check=accuracy_checker.main:main",
             "convert_annotation=accuracy_checker.annotation_converters.convert:main"]},
     zip_safe=False,
-    python_requires='>=3.8',
+    python_requires='>=3.9',
     install_requires=_requirements,
     tests_require=[read("requirements-test.in")],
     cmdclass={'test': PyTest, 'install_core': CoreInstall},