Update dagger version in all docs to 0.2.4

Including the version that we install explicitly.

Fixes https://github.com/dagger/dagger/issues/1908

Signed-off-by: Gerhard Lazu <gerhard@lazu.co.uk>

docs/update-version.sh

@@ -9,5 +9,5 @@ then
 fi
 
 sed --in-place --regexp-extended --expression \
-  's/v'"${DAGGER_VERSION_FROM:-0.2.0}"'/v'"${DAGGER_VERSION_TO:-0.2.3}"'/g' \
+  's/'"${DAGGER_VERSION_FROM:-0.2.3}"'/'"${DAGGER_VERSION_TO:-0.2.4}"'/g' \
   ./*/*.md