build(deps): bump oss-fuzz-base/base-builder-python from bb1b8eb to 6a3e2f6 in /.clusterfuzzlite (#12117)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.clusterfuzzlite/Dockerfile

@@ -6,7 +6,7 @@
 # Pinned by digest for supply-chain integrity. Bump periodically (the OSS-Fuzz
 # base-builder is updated frequently with toolchain fixes); resolve a fresh digest with:
 #   docker buildx imagetools inspect gcr.io/oss-fuzz-base/base-builder-python:latest --format '{{.Manifest.Digest}}'
-FROM gcr.io/oss-fuzz-base/base-builder-python@sha256:bb1b8ebd512e29bc955d2ef4de4b141b38809249cc66ff2fd2947dfcb6a9b012
+FROM gcr.io/oss-fuzz-base/base-builder-python@sha256:6a3e2f6d0cd402285756257ccec0de734638ce7a955f6099de9a6f83a19b63bd
 
 COPY . $SRC/haystack
 WORKDIR $SRC/haystack