Bump bitcoin from 0.26.0 to 0.26.2

Bumps [bitcoin](https://github.com/rust-bitcoin/rust-bitcoin) from 0.26.0 to 0.26.2.
- [Release notes](https://github.com/rust-bitcoin/rust-bitcoin/releases)
- [Changelog](https://github.com/rust-bitcoin/rust-bitcoin/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-bitcoin/rust-bitcoin/compare/0.26.0...0.26.2)

---
updated-dependencies:
- dependency-name: bitcoin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Cargo.lock

@@ -321,9 +321,9 @@ checksum = "349f9b6a179ed607305526ca489b34ad0a41aed5f7980fa90eb03160b69598fb"
 
 [[package]]
 name = "bitcoin"
-version = "0.26.0"
+version = "0.26.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1ec5f88a446d66e7474a3b8fa2e348320b574463fb78d799d90ba68f79f48e0e"
+checksum = "6742ec672d3f12506f4ac5c0d853926ff1f94e675f60ffd3224039972bf663f1"
 dependencies = [
  "bech32",
  "bitcoin_hashes",
@@ -355,9 +355,9 @@ dependencies = [
 
 [[package]]
 name = "bitcoin_hashes"
-version = "0.9.4"
+version = "0.9.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0aaf87b776808e26ae93289bc7d025092b6d909c193f0cdee0b3a86e7bd3c776"
+checksum = "7ce18265ec2324ad075345d5814fbeed4f41f0a660055dc78840b74d19b874b1"
 dependencies = [
  "serde",
 ]
@@ -3423,9 +3423,9 @@ dependencies = [
 
 [[package]]
 name = "secp256k1"
-version = "0.20.1"
+version = "0.20.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "733b114f058f260c0af7591434eef4272ae1a8ec2751766d3cb89c6df8d5e450"
+checksum = "97d03ceae636d0fed5bae6a7f4f664354c5f4fcedf6eef053fef17e49f837d0a"
 dependencies = [
  "rand 0.6.5",
  "secp256k1-sys",