Bump pyqt5-qt5 from 5.15.2 to 5.15.15 in /tools/deps

Bumps [pyqt5-qt5](https://www.riverbankcomputing.com/software/pyqt/) from 5.15.2 to 5.15.15.

---
updated-dependencies:
- dependency-name: pyqt5-qt5
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

tools/deps/requirements.txt

@@ -320,10 +320,10 @@ pyqt5==5.15.10 \
     --hash=sha256:ff99b4f91aa8eb60510d5889faad07116d3340041916e46c07d519f7cad344e1
 PyQt5-Qt5==5.15.13 ; sys_platform == "darwin" \
     --hash=sha256:141859f2ffe04cc6c5db970e2b6ad9f98897805d886a14c52614e3799daab6d6
-PyQt5-Qt5==5.15.2 ; sys_platform != "darwin" \
-    --hash=sha256:9cc7a768b1921f4b982ebc00a318ccb38578e44e45316c7a4a850e953e1dd327 \
-    --hash=sha256:750b78e4dba6bdf1607febedc08738e318ea09e9b10aea9ff0d73073f11f6962 \
-    --hash=sha256:1988f364ec8caf87a6ee5d5a3a5210d57539988bf8e84714c7d60972692e2f4a
+PyQt5-Qt5==5.15.15 ; sys_platform != "darwin" \
+    --hash=sha256:611505d04ffb06a5e5bcf98f5ff0e4e15ba7785565ccbe7bd3b2e40642ea3bdd \
+    --hash=sha256:eb74072935958a830887115b1de1ff26341fc2d5881b28129de39612b10a260e \
+    --hash=sha256:f8b174725fbe29c1a22f8acce5798933a65c8a083f1d9833ff212479ec2b3c14
 pyqt5-stubs==5.15.6.0 \
     --hash=sha256:7fb8177c72489a8911f021b7bd7c33f12c87f6dba92dcef3fdcdb5d9400f0f3f \
     --hash=sha256:91270ac23ebf38a1dc04cd97aa852cd08af82dc839100e5395af1447e3e99707