Bump pyqt5 from 5.15.3 to 5.15.10

Bumps [pyqt5](https://www.riverbankcomputing.com/software/pyqt/) from 5.15.3 to 5.15.10.

---
updated-dependencies:
- dependency-name: pyqt5
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -10,16 +10,16 @@ brotli==1.0.9
     # via fonttools
 fonttools[woff]==4.23.0
     # via -r requirements.in
+pyinstaller==4.3
+    # via -r requirements.in
 pyinstaller-hooks-contrib==2021.1
     # via pyinstaller
-pyinstaller==4.3
+pyqt5==5.15.10
     # via -r requirements.in
-pyqt5-qt==5.15.2
+pyqt5-qt5==5.15.2
     # via pyqt5
-pyqt5-sip==12.8.1
+pyqt5-sip==12.13.0
     # via pyqt5
-pyqt5==5.15.3
-    # via -r requirements.in
 zopfli==0.1.8
     # via fonttools