chore(release): prepare for prerelease 1.108.0-rc.1 (#1584)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

charts/radix-operator/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v2
 name: radix-operator
-version: 1.107.1 # x-patch-semver
-appVersion: 1.107.1 # x-patch-semver
+version: 1.108.0-rc.1 # x-patch-semver
+appVersion: 1.108.0-rc.1 # x-patch-semver
 kubeVersion: ">=1.24.0"
 description: Radix Operator
 icon:  https://radix.equinor.com/images/logos/logo.svg

version.txt

@@ -1 +1 @@
-1.107.1
+1.108.0-rc.1