Fix the CI for nightly + minimal crate versions and also for the MSRV

- Change the following dev dependencies for nightly + minimal crate versions:
  - Switch back to native-tls in reqwest.
- Change the following dev dependencies for the MSRV 1.60.0:
  - Pin async-global-executor version to v2.3.1.
  - Pin blocking version to v1.4.1.

.ci_extras/pin-crate-vers-msrv.sh

@@ -5,7 +5,9 @@ set -eux
 # Pin some dependencies to specific versions for the MSRV.
 cargo update -p tempfile --precise 3.6.0
 cargo update -p tokio --precise 1.29.1
+cargo update -p async-global-executor --precise 2.3.1
 cargo update -p async-executor --precise 1.5.1
+cargo update -p blocking --precise 1.4.1
 cargo update -p reqwest --precise 0.11.18
 cargo update -p regex --precise 1.9.6
 cargo update -p memchr --precise 2.6.2

.ci_extras/pin-crate-vers-nightly.sh

@@ -3,4 +3,6 @@
 set -eux
 
 # Pin some dependencies to specific versions for the nightly toolchain.
+cargo update -p openssl --precise 0.10.39
+cargo update -p cc --precise 1.0.61
 cargo update -p proc-macro2 --precise 1.0.60

Cargo.toml

@@ -89,7 +89,7 @@ async-std = { version = "1.11", features = ["attributes"] }
 env_logger = "0.9"
 getrandom = "0.2"
 paste = "1.0.9"
-reqwest = { version = "0.11.11", default-features = false, features = ["rustls-tls"] }
+reqwest = "0.11.11"
 skeptic = "0.13"
 tokio = { version = "1.19", features = ["fs", "macros", "rt-multi-thread", "sync", "time" ] }