chore(deps): update ghcr.io/astral-sh/uv docker tag to v0.5.21

Signed-off-by: red-hat-konflux <126015336+red-hat-konflux[bot]@users.noreply.github.com>

Dockerfile

@@ -6,7 +6,7 @@ COPY LICENSE /licenses/
 # Builder image
 #
 FROM base AS builder
-COPY --from=ghcr.io/astral-sh/uv:0.5.20@sha256:a8d9b557b6cd6ede1842b0e03cd7ac26870e2c6b4eea4e10dab67cbd3145f8d9 /uv /bin/uv
+COPY --from=ghcr.io/astral-sh/uv:0.5.21@sha256:87d729f94c87d0aade077260d07d899848f027b7ef37e734dca711c7ceffd3cf /uv /bin/uv
 
 ENV \
     # use venv from ubi image