Bump bdk_esplora and bdk_file_store versions for 1.0.0-alpha.3 release

These crates need to have their versions bumped because the version of bdk_chain was bumped to 0.7.0 with the 1.0.0-alpha.3 release.

bdk_esplora to 0.5.0
bdk_file_store to 0.3.0

crates/esplora/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "bdk_esplora"
-version = "0.4.0"
+version = "0.5.0"
 edition = "2021"
 homepage = "https://bitcoindevkit.org"
 repository = "https://github.com/bitcoindevkit/bdk"

crates/file_store/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "bdk_file_store"
-version = "0.2.0"
+version = "0.3.0"
 edition = "2021"
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/bitcoindevkit/bdk"