Downgrade dependency cosign to v2

ericcornelissen · ericcornelissen · commit 8b5cf7075b72 · 2025-10-12T11:52:39.000+02:00
Revert 16afae6 Because `sigstore/cosign-installer@v3.9.2` (nor v3.10.0) supports installing cosign v3 yet.
diff --git a/.tool-versions b/.tool-versions
@@ -1,6 +1,6 @@
 # Configuration file for asdf (https://asdf-vm.com/)
 actionlint 1.7.8
-cosign 3.0.2
+cosign 2.6.1
 diffoci 0.1.7
 dockle 0.4.15
 grype 0.99.0
