Update mix.lock

mix.lock

@@ -7,7 +7,7 @@
   "absinthe_relay": {:hex, :absinthe_relay, "1.5.2", "cfb8aed70f4e4c7718d3f1c212332d2ea728f17c7fc0f68f1e461f0f5f0c4b9a", [:mix], [{:absinthe, "~> 1.5.0 or ~> 1.6.0 or ~> 1.7.0", [hex: :absinthe, repo: "hexpm", optional: false]}, {:ecto, "~> 2.0 or ~> 3.0", [hex: :ecto, repo: "hexpm", optional: true]}], "hexpm", "0587ee913afa31512e1457a5064ee88427f8fe7bcfbeeecd41c71d9cff0b62b6"},
   "acceptor_pool": {:hex, :acceptor_pool, "1.0.0", "43c20d2acae35f0c2bcd64f9d2bde267e459f0f3fd23dab26485bf518c281b21", [:rebar3], [], "hexpm", "0cbcd83fdc8b9ad2eee2067ef8b91a14858a5883cb7cd800e6fcd5803e158788"},
   "accessible": {:hex, :accessible, "0.3.0", "932f6ade6ea839212fea1735ab4ffdc39a3843a622f2ea5d28f0ab41c14b4435", [:mix], [], "hexpm", "13a11b0611ab82f7b9098a88465b5674f729c02bd613216243c123c65f90f296"},
-  "activity_pub": {:git, "https://github.com/bonfire-networks/activity_pub", "2e55a2c47697f808b61e7838d42ea429bc18439f", [branch: "main"]},
+  "activity_pub": {:git, "https://github.com/bonfire-networks/activity_pub", "921e14019c037483bf942430f2d0192cd812c185", [branch: "main"]},
   "apical": {:git, "https://github.com/bonfire-networks/apical", "a96c74b5209c4043cdc9fcd2aba069e49bd2b260", []},
   "argon2_elixir": {:hex, :argon2_elixir, "4.1.0", "2f242afe47c373663cb404eb75e792f749507075ed737b49685a9f2edcb401df", [:make, :mix], [{:comeonin, "~> 5.3", [hex: :comeonin, repo: "hexpm", optional: false]}, {:elixir_make, "~> 0.6", [hex: :elixir_make, repo: "hexpm", optional: false]}], "hexpm", "2ecb6f2ca2cca34b28e546224661bf2a85714516d2713c7313c5ffe8bdade7cf"},
   "arrows": {:hex, :arrows, "0.2.0", "11c078b52303413a987aa39c63d82d4b1b1d18f52bb0437de168c1010b396dbe", [:mix], [], "hexpm", "4c09a0b1084c6d40d7cbac68ec803eec0e3ecb7624cc693efdd79f17598e6085"},