Bump all opentelemetry minimum versions to 1.4

Author: shevisj

opentelemetry-exporter-gcp-monitoring/setup.cfg

@@ -26,8 +26,8 @@ package_dir=
 packages=find_namespace:
 install_requires =
     google-cloud-monitoring ~= 2.0
-    opentelemetry-api ~= 1.0
-    opentelemetry-sdk ~= 1.0
+    opentelemetry-api ~= 1.4
+    opentelemetry-sdk ~= 1.4
     opentelemetry-resourcedetector-gcp >= 1.5.0dev0, == 1.*
 
 [options.packages.find]

opentelemetry-exporter-gcp-trace/setup.cfg

@@ -27,7 +27,7 @@ packages=find_namespace:
 install_requires =
     google-cloud-trace ~= 1.1
     opentelemetry-api ~= 1.4
-    opentelemetry-sdk ~= 1.0
+    opentelemetry-sdk ~= 1.4
     opentelemetry-resourcedetector-gcp >= 1.5.0dev0, == 1.*
 
 [options.packages.find]

opentelemetry-propagator-gcp/setup.cfg

@@ -25,7 +25,7 @@ package_dir=
     =src
 packages=find_namespace:
 install_requires =
-    opentelemetry-api ~= 1.0
+    opentelemetry-api ~= 1.4
 
 [options.packages.find]
 where = src

opentelemetry-resourcedetector-gcp/setup.cfg

@@ -25,8 +25,8 @@ package_dir=
     =src
 packages=find_namespace:
 install_requires =
-    opentelemetry-api ~= 1.0
-    opentelemetry-sdk ~= 1.0
+    opentelemetry-api ~= 1.4
+    opentelemetry-sdk ~= 1.4
     requests ~= 2.24
     # TODO: remove when Python 3.7 is dropped
     typing_extensions ~= 4.0