Bump rbuilder to v1.6.8

Signed-off-by: bakhtin <a@bakhtin.net>

Author: bakhtin

mkosi.images/buildernet/mkosi.extra/etc/systemd/system/rbuilder-operator-rebalancer-downloader.service

@@ -5,14 +5,14 @@ After=network-online.target
 
 [Service]
 Type=oneshot
-Environment=RBUILDER_OPERATOR_SHA256SUM=6bfcffac08bd56cac7283cdf449c231bd5d6708bf824fba5fae7fa3796eb33c6 \
-            RBUILDER_OPERATOR_TAG=v1.6.4 \
+Environment=RBUILDER_OPERATOR_SHA256SUM=02d2bee0ba22f76b1ea13cb178413d18d1b8dd6cdd331e03835f4761df2e2fb1 \
+            RBUILDER_OPERATOR_TAG=v1.6.8 \
             RBUILDER_OPERATOR_REPO=rbuilder-prism \
-            RBUILDER_OPERATOR_ARTIFACT=rbuilder-operator-v1.6.4-x86_64-unknown-linux-gnu \
-            RBUILDER_REBALANCER_SHA256SUM=afdf9deba068ec995e1188f02a338d89ead096d19b4456e731934925d41d7567 \
-            RBUILDER_REBALANCER_TAG=v1.6.4 \
+            RBUILDER_OPERATOR_ARTIFACT=rbuilder-operator-v1.6.8-x86_64-unknown-linux-gnu \
+            RBUILDER_REBALANCER_SHA256SUM=8ea7a0e579e23ec4f35efd9d80d851768594606b4fdc936432f01745fc2a6a5c \
+            RBUILDER_REBALANCER_TAG=v1.6.8 \
             RBUILDER_REBALANCER_REPO=rbuilder-prism \
-            RBUILDER_REBALANCER_ARTIFACT=rbuilder-rebalancer-v1.6.4-x86_64-unknown-linux-gnu
+            RBUILDER_REBALANCER_ARTIFACT=rbuilder-rebalancer-v1.6.8-x86_64-unknown-linux-gnu
 EnvironmentFile=%E/gh_token.env
 
 # rbuilder-operator