Bump github.com/go-git/go-billy/v6

Bumps [github.com/go-git/go-billy/v6](https://github.com/go-git/go-billy) from 6.0.0-20260226131633-45bd0956d66f to 6.0.0-alpha.1.
- [Release notes](https://github.com/go-git/go-billy/releases)
- [Commits](https://github.com/go-git/go-billy/commits/v6.0.0-alpha.1)

---
updated-dependencies:
- dependency-name: github.com/go-git/go-billy/v6
  dependency-version: 6.0.0-alpha.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

go.mod

@@ -8,7 +8,7 @@ require (
 	github.com/carabiner-dev/signer v0.4.5
 	github.com/carabiner-dev/vcslocator v0.4.3
 	github.com/fatih/color v1.19.0
-	github.com/go-git/go-billy/v6 v6.0.0-20260226131633-45bd0956d66f
+	github.com/go-git/go-billy/v6 v6.0.0-alpha.1
 	github.com/go-git/go-git/v6 v6.0.0-20260305211659-2083cf940afa
 	github.com/google/go-github/v69 v69.2.0
 	github.com/google/uuid v1.6.0

go.sum

@@ -175,8 +175,8 @@ github.com/go-git/gcfg/v2 v2.0.2 h1:MY5SIIfTGGEMhdA7d7JePuVVxtKL7Hp+ApGDJAJ7dpo=
 github.com/go-git/gcfg/v2 v2.0.2/go.mod h1:/lv2NsxvhepuMrldsFilrgct6pxzpGdSRC13ydTLSLs=
 github.com/go-git/go-billy/v5 v5.8.1-0.20260407233109-416e0a5b21a8 h1:Ol1+pjteoiYrrxjMmR+YvpS23HGy6B0YPVjvk7CnRDY=
 github.com/go-git/go-billy/v5 v5.8.1-0.20260407233109-416e0a5b21a8/go.mod h1:RpvI/rw4Vr5QA+Z60c6d6LXH0rYJo0uD5SqfmrrheCY=
-github.com/go-git/go-billy/v6 v6.0.0-20260226131633-45bd0956d66f h1:Uvbx7nITO3Sd1GdXarX0TbyYmOaSNIJP0mm4LocEyyA=
-github.com/go-git/go-billy/v6 v6.0.0-20260226131633-45bd0956d66f/go.mod h1:ZW9JC5gionMP1kv5uiaOaV23q0FFmNrVOV8VW+y/acc=
+github.com/go-git/go-billy/v6 v6.0.0-alpha.1 h1:xVjAR4oUvrKy7/Xuw/lLlV3gkxR3KO2H8W+MamuVVsQ=
+github.com/go-git/go-billy/v6 v6.0.0-alpha.1/go.mod h1:eaCUpHbedW7//EwcYmUDfJe2N6sJC9O12AT0OTqJR1E=
 github.com/go-git/go-git-fixtures/v4 v4.3.2-0.20231010084843-55a94097c399 h1:eMje31YglSBqCdIqdhKBW8lokaMrL3uTkpGYlE2OOT4=
 github.com/go-git/go-git-fixtures/v4 v4.3.2-0.20231010084843-55a94097c399/go.mod h1:1OCfN199q1Jm3HZlxleg+Dw/mwps2Wbk9frAWm+4FII=
 github.com/go-git/go-git-fixtures/v5 v5.1.2-0.20260122163445-0622d7459a67 h1:3hutPZF+/FBjR/9MdsLJ7e1mlt9pwHgwxMW7CrbmWII=