Correct the minimum versions of various dependencies we have

We have a bunch of dependencies listed with minimum supported versions
that don't actually build -- either because such early versions of
crates simply do not build successfully anymore on current toolchain or
because we make use of features that were added only in later version of
said dependencies.
Bump them all up to the actual minimum versions.

Signed-off-by: Daniel Müller <deso@posteo.net>

Author: d-e-s-o

examples/capable/Cargo.toml

@@ -5,7 +5,7 @@ authors = ["Devasia Thomas <https://www.linkedin.com/in/devasiathomas>"]
 edition = "2021"
 
 [dependencies]
-anyhow = "1.0"
+anyhow = "1.0.4"
 libbpf-rs = { path = "../../libbpf-rs" }
 libc = "0.2"
 phf = { version = "0.10", features = ["macros"] }

examples/tproxy/Cargo.toml

@@ -10,7 +10,7 @@ name = "proxy"
 
 [dependencies]
 anyhow = "1.0"
-clap = { version = "3.1", default-features = false, features = ["std", "derive"] }
+clap = { version = "3.2.1", default-features = false, features = ["std", "derive"] }
 ctrlc = "3.2"
 libbpf-rs = { path = "../../libbpf-rs" }
 nix = { version = "0.24", default-features = false, features = ["net", "user"] }

libbpf-cargo/Cargo.toml

@@ -30,8 +30,8 @@ path = "src/lib.rs"
 novendor = ["libbpf-sys/novendor"]
 
 [dependencies]
-anyhow = "1.0"
-cargo_metadata = "0.14"
+anyhow = "1.0.1"
+cargo_metadata = "0.15.0"
 libbpf-sys = { version = "1.0.3" }
 memmap2 = "0.5"
 num_enum = "0.5"

libbpf-rs/Cargo.toml

@@ -32,7 +32,7 @@ vsprintf = "2.0"
 
 [dev-dependencies]
 libc = "0.2"
-log = "0.4"
+log = "0.4.4"
 plain = "0.2.3"
 probe = "0.3"
 scopeguard = "1.1"

libbpf-rs/src/print.rs

@@ -83,7 +83,6 @@ extern "C" fn outer_print_cb(
 /// To pass all messages to the `log` crate:
 ///
 /// ```
-/// use log;
 /// use libbpf_rs::{PrintLevel, set_print};
 ///
 /// fn print_to_log(level: PrintLevel, msg: String) {