🐛 Remove non-validating context-guru go.sum placeholders

The context-guru dependency was renamed github.com/kagenti/context-guru →
github.com/rossoctl/context-guru, but the go.sum `h1:` and `/go.mod h1:` hashes
were carried over byte-identical by the string replace. Go's `/go.mod` hash is
computed over the go.mod contents, whose `module` line must become
github.com/rossoctl/context-guru on republish — so the recorded hashes can never
match and would trigger a `go mod verify` checksum-mismatch SECURITY ERROR for
every consumer once the renamed dep is published.

You can't produce a valid checksum for a module that doesn't exist yet, so
rather than record known-wrong hashes, remove the placeholder lines from
authlib, authbridge-envoy, and authbridge-proxy go.sum. `go mod tidy` regenerates
real checksums once rossoctl/context-guru is published. The go.mod `require`
(pseudo-version v0.0.0-20260713113308-b624f2c3d8c2, commit b624f2c3d8c2 —
confirmed present in the repo) is unchanged; the build stays red on the
unpublished dep (documented cross-repo sequencing) until the org move.

Addresses review feedback on #678.

Related to #1972

Assisted-By: Claude Opus 4.8 <noreply@anthropic.com>
Signed-off-by: IBRAHIM IBRAHIM <66755652+Ibrahim2595@users.noreply.github.com>

Author: Ibrahim2595

authbridge/authlib/go.sum

@@ -124,8 +124,6 @@ github.com/huandu/xstrings v1.4.0 h1:D17IlohoQq4UcpqD7fDk80P7l+lwAmlFaBHgOipl2FU
 github.com/huandu/xstrings v1.4.0/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq4ovT0aE=
 github.com/invopop/jsonschema v0.13.0 h1:KvpoAJWEjR3uD9Kbm2HWJmqsEaHt8lBUpd0qHcIi21E=
 github.com/invopop/jsonschema v0.13.0/go.mod h1:ffZ5Km5SWWRAIN6wbDXItl95euhFz2uON45H2qjYt+0=
-github.com/rossoctl/context-guru v0.0.0-20260713113308-b624f2c3d8c2 h1:nyu0kAd/+NlRM95IxEiRws2QyRtyyYRy8u8wjnwxn4o=
-github.com/rossoctl/context-guru v0.0.0-20260713113308-b624f2c3d8c2/go.mod h1:arqPc8H+3s+XjplrD0ytgv1Zum241jvuGu3139DX6p8=
 github.com/klauspost/compress v1.18.6 h1:2jupLlAwFm95+YDR+NwD2MEfFO9d4z4Prjl1XXDjuao=
 github.com/klauspost/compress v1.18.6/go.mod h1:cwPg85FWrGar70rWktvGQj8/hthj3wpl0PGDogxkrSQ=
 github.com/klauspost/cpuid/v2 v2.3.0 h1:S4CRMLnYUhGeDFDqkGriYKdfoFlDnMtqTiI/sFzhA9Y=

authbridge/cmd/authbridge-envoy/go.sum

@@ -122,8 +122,6 @@ github.com/huandu/xstrings v1.4.0 h1:D17IlohoQq4UcpqD7fDk80P7l+lwAmlFaBHgOipl2FU
 github.com/huandu/xstrings v1.4.0/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq4ovT0aE=
 github.com/invopop/jsonschema v0.13.0 h1:KvpoAJWEjR3uD9Kbm2HWJmqsEaHt8lBUpd0qHcIi21E=
 github.com/invopop/jsonschema v0.13.0/go.mod h1:ffZ5Km5SWWRAIN6wbDXItl95euhFz2uON45H2qjYt+0=
-github.com/rossoctl/context-guru v0.0.0-20260713113308-b624f2c3d8c2 h1:nyu0kAd/+NlRM95IxEiRws2QyRtyyYRy8u8wjnwxn4o=
-github.com/rossoctl/context-guru v0.0.0-20260713113308-b624f2c3d8c2/go.mod h1:arqPc8H+3s+XjplrD0ytgv1Zum241jvuGu3139DX6p8=
 github.com/klauspost/compress v1.18.6 h1:2jupLlAwFm95+YDR+NwD2MEfFO9d4z4Prjl1XXDjuao=
 github.com/klauspost/compress v1.18.6/go.mod h1:cwPg85FWrGar70rWktvGQj8/hthj3wpl0PGDogxkrSQ=
 github.com/klauspost/cpuid/v2 v2.3.0 h1:S4CRMLnYUhGeDFDqkGriYKdfoFlDnMtqTiI/sFzhA9Y=

authbridge/cmd/authbridge-proxy/go.sum

@@ -116,8 +116,6 @@ github.com/huandu/xstrings v1.4.0 h1:D17IlohoQq4UcpqD7fDk80P7l+lwAmlFaBHgOipl2FU
 github.com/huandu/xstrings v1.4.0/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq4ovT0aE=
 github.com/invopop/jsonschema v0.13.0 h1:KvpoAJWEjR3uD9Kbm2HWJmqsEaHt8lBUpd0qHcIi21E=
 github.com/invopop/jsonschema v0.13.0/go.mod h1:ffZ5Km5SWWRAIN6wbDXItl95euhFz2uON45H2qjYt+0=
-github.com/rossoctl/context-guru v0.0.0-20260713113308-b624f2c3d8c2 h1:nyu0kAd/+NlRM95IxEiRws2QyRtyyYRy8u8wjnwxn4o=
-github.com/rossoctl/context-guru v0.0.0-20260713113308-b624f2c3d8c2/go.mod h1:arqPc8H+3s+XjplrD0ytgv1Zum241jvuGu3139DX6p8=
 github.com/klauspost/compress v1.18.6 h1:2jupLlAwFm95+YDR+NwD2MEfFO9d4z4Prjl1XXDjuao=
 github.com/klauspost/compress v1.18.6/go.mod h1:cwPg85FWrGar70rWktvGQj8/hthj3wpl0PGDogxkrSQ=
 github.com/klauspost/cpuid/v2 v2.3.0 h1:S4CRMLnYUhGeDFDqkGriYKdfoFlDnMtqTiI/sFzhA9Y=