devcontainers(deps): Bump ghcr.io/devcontainers/features/python

Bumps ghcr.io/devcontainers/features/python from 1.4.2 to 1.5.0.

---
updated-dependencies:
- dependency-name: ghcr.io/devcontainers/features/python
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.devcontainer/devcontainer-lock.json

@@ -6,9 +6,9 @@
       "integrity": "sha256:503f23cd692325b3cbb8c20a0ecfabb3444b0c786b363e0c82572bd7d71dc099"
     },
     "ghcr.io/devcontainers/features/python:1": {
-      "version": "1.4.2",
-      "resolved": "ghcr.io/devcontainers/features/python@sha256:bf021f1800543f08bf029c449a3f25341be782b620802befa1f8e6ee51cf6cf6",
-      "integrity": "sha256:bf021f1800543f08bf029c449a3f25341be782b620802befa1f8e6ee51cf6cf6"
+      "version": "1.5.0",
+      "resolved": "ghcr.io/devcontainers/features/python@sha256:3813e9f72e3f858188904be8504f0ccaae53e41a62430b503bc146bd0f072976",
+      "integrity": "sha256:3813e9f72e3f858188904be8504f0ccaae53e41a62430b503bc146bd0f072976"
     },
     "ghcr.io/ministryofjustice/devcontainer-feature/container-structure-test:1": {
       "version": "1.0.0",