feat: Pin flux version in bootstrap script

bootstrap.sh

@@ -4,6 +4,7 @@ root=$(git rev-parse --show-toplevel)
 
 tools=(talosctl cilium-cli yq helm)
 cilium_version=1.18.4
+flux_version=2.7.5
 
 for tool in "${tools[@]}"; do
 	command -v ${tool} > /dev/null || (echo "Missing: ${tool}" && exit -1)
@@ -129,4 +130,5 @@ flux bootstrap git \
 	--branch=main \
 	--private-key-file=clusters/${cluster_name}/deploy.key -s \
 	--path=clusters/${cluster_name} \
-	--components-extra=source-watcher
+	--components-extra=source-watcher \
+	--version v${flux_version}