[SCHEMATIC-266] Resolve errors new in mypy v1.15.0 (#1582)

resolve errors found my new mypy version, primarily in schemas module

Author: SageGJ

.github/workflows/test.yml

@@ -199,7 +199,7 @@ jobs:
         with:
           files: "coverage.xml"
       - name: SonarCloud Scan
-        uses: SonarSource/sonarqube-scan-action@v4.1.0
+        uses: SonarSource/sonarqube-scan-action@v5.0.0
         if: ${{ always() }}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}